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Adachi I, Adamczyk K, Aggarwal L, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Aversano M, Babu V, Bae H, Bahinipati S, Bambade P, Banerjee S, Barrett M, Baudot J, Bauer M, Baur A, Beaubien A, Becherer F, Becker J, Behera PK, Bennett JV, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bobrov A, Bodrov D, Bolz A, Bondar A, Borah J, Bozek A, Bračko M, Branchini P, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Cerasoli J, Chang MC, Chang P, Cheaib R, Cheema P, Chekelian V, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Choi SK, Choudhury S, Cochran J, Corona L, Cremaldi LM, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Garg R, Garmash A, Gaudino G, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Ghosh D, Ghumaryan H, Giakoustidis G, Giordano R, Giri A, Gobbo B, Godang R, Gogota O, Goldenzweig P, Gradl W, Granderath S, Graziani E, Greenwald D, Gruberová Z, Gu T, Guan Y, Gudkova K, Halder S, Han Y, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heidelbach A, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hoek M, Hohmann M, Horak P, Hsu CL, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jang EJ, Ji QP, Jia S, Jin Y, Johnson A, Junkerkalefeld H, Kaliyar AB, Kandra J, Kang KH, Karyan G, Kawasaki T, Keil F, Ketter C, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lai YT, Lam T, Lanceri L, Lange JS, Laurenza M, Leboucher R, Le Diberder FR, Leitl P, Levit D, Lewis PM, Li C, Li LK, Li Y, Libby J, Liu QY, Liu ZQ, Liventsev D, Longo S, Lueck T, Luo T, Lyu C, Ma Y, Maggiora M, Maharana SP, Maiti R, Maity S, Mancinelli G, Manfredi R, Manoni E, Manthei AC, Mantovano M, Marcantonio D, Marcello S, Marinas C, Martel L, Martellini C, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuda T, Matvienko D, Maurya SK, McKenna JA, Mehta R, Meier F, Merola M, Metzner F, Milesi M, Miller C, Mirra M, Miyabayashi K, Mohanty GB, Molina-Gonzalez N, Mondal S, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakazawa Y, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nazaryan G, Nisar NK, Nishida S, Ogawa S, Ono H, Oskin P, Otani F, Pakhlov P, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Parham K, Park SH, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Podobnik T, Pokharel S, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Raiz S, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Roehrken M, Roney JM, Rostomyan A, Rout N, Russo G, Sahoo D, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schmitt C, Schnepf M, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shan W, Sharma C, Shen CP, Shi XD, Shillington T, Shiu JG, Shtol D, Shwartz B, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobie RJ, Sobotzik M, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stavroulakis P, Stefkova S, Stottler ZS, Stroili R, Strube J, Sumihama M, Sumisawa K, Sutcliffe W, Svidras H, Takahashi M, Takizawa M, Tamponi U, Tanida K, Tenchini F, Thaller A, Tittel O, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Tsaklidis I, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Veronesi M, Vismaya VS, Vitale L, Vobbilisetti V, Volpe R, Wach B, Waheed E, Wakai M, Wallner S, Wang E, Wang MZ, Wang Z, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Yin JH, Yoshihara K, Yuan CZ, Zani L, Zhang Y, Zhilich V, Zhou JS, Zhou QD, Zhukova VI, Žlebčík R. Tests of Light-Lepton Universality in Angular Asymmetries of B^{0}→D^{*-}ℓν Decays. Phys Rev Lett 2023; 131:181801. [PMID: 37977641 DOI: 10.1103/physrevlett.131.181801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/29/2023] [Indexed: 11/19/2023]
Abstract
We present the first comprehensive tests of the universality of the light leptons in the angular distributions of semileptonic B^{0}-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral B is fully reconstructed in ϒ(4S)→BB[over ¯] decays in data corresponding to 189 fb^{-1} integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations.
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Adachi I, Aggarwal L, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Aversano M, Babu V, Bae H, Bahinipati S, Bambade P, Banerjee S, Barrett M, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bodrov D, Bondar A, Bozek A, Bračko M, Branchini P, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Cerasoli J, Chang MC, Chang P, Cheema P, Chekelian V, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Choi SK, Choudhury S, Cochran J, Corona L, Das S, Dattola F, De La Motte SA, de Marino G, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dreyer S, Dubey S, Dujany G, Ecker P, Epifanov D, Feichtinger P, Ferlewicz D, Finck C, Finocchiaro G, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Garmash A, Gaudino G, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Ghosh D, Ghumaryan H, Giakoustidis G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Gogota O, Goldenzweig P, Gradl W, Graziani E, Greenwald D, Gruberová Z, Gu T, Guan Y, Gudkova K, Han Y, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hershenhorn A, Higuchi T, Hill EC, Hoek M, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Junkerkalefeld H, Kaliyar AB, Kandra J, Karyan G, Kawasaki T, Keil F, Ketter C, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Korobov A, Korpar S, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lacaprara S, Lai YT, Lam T, Lange JS, Laurenza M, Leboucher R, Le Diberder FR, Leitl P, Levit D, Lewis PM, Li LK, Libby J, Liu QY, Liu ZQ, Liventsev D, Longo S, Lueck T, Lyu C, Ma Y, Maggiora M, Maharana SP, Maiti R, Maity S, Manfredi R, Manoni E, Mantovano M, Marcantonio D, Marcello S, Marinas C, Martellini C, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuda T, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Mehta R, Meier F, Merola M, Metzner F, Milesi M, Miller C, Mirra M, Miyabayashi K, Mohanty GB, Molina-Gonzalez N, Mondal S, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakazawa Y, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nazaryan G, Nisar NK, Nishida S, Ono H, Otani F, Oxford ER, Pakhlov P, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Podobnik T, Pokharel S, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rados P, Raeuber G, Raiz S, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Roney JM, Rostomyan A, Rout N, Russo G, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schmitt C, Schwanda C, Schwartz AJ, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shan W, Shi XD, Shillington T, Shiu JG, Shtol D, Sibidanov A, Simon F, Sobie RJ, Sobotzik M, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stavroulakis P, Stottler ZS, Stroili R, Sumihama M, Svidras H, Takahashi M, Takizawa M, Tamponi U, Tanida K, Tenchini F, Tittel O, Tonelli D, Torassa E, Trabelsi K, Tsaklidis I, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varvell KE, Veronesi M, Vismaya VS, Vitale L, Volpe R, Wach B, Wallner S, Wang E, Wang MZ, Wang XL, Wang Z, Warburton A, Watanabe M, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Yoshihara K, Yuan CZ, Yusa Y, Zhang Y, Zhilich V, Zhou JS, Zhou QD, Zhukova VI, Žlebčík R. Precise Measurement of the D_{s}^{+} Lifetime at Belle II. Phys Rev Lett 2023; 131:171803. [PMID: 37955504 DOI: 10.1103/physrevlett.131.171803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/14/2023] [Indexed: 11/14/2023]
Abstract
We measure the lifetime of the D_{s}^{+} meson using a data sample of 207 fb^{-1} collected by the Belle II experiment running at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The lifetime is determined by fitting the decay-time distribution of a sample of 116×10^{3} D_{s}^{+}→ϕπ^{+} decays. Our result is τ_{D_{s}^{+}}=(499.5±1.7±0.9) fs, where the first uncertainty is statistical and the second is systematic. This result is significantly more precise than previous measurements.
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Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Aversano M, Babu V, Bae H, Bahinipati S, Bambade P, Banerjee S, Bansal S, Barrett M, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhardwaj V, Bhuyan B, Bianchi F, Bilka T, Bilokin S, Biswas D, Bobrov A, Bodrov D, Bolz A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Cerasoli J, Chang MC, Chang P, Cheaib R, Cheema P, Chekelian V, Chen YQ, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Cochran J, Corona L, Cremaldi LM, Cunliffe S, Czank T, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, de Marino G, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Garmash A, Gaudino G, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Ghosh D, Ghumaryan H, Giakoustidis G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Gogota O, Goldenzweig P, Gradl W, Grammatico T, Granderath S, Graziani E, Greenwald D, Gruberová Z, Gu T, Guan Y, Gudkova K, Guilliams J, Halder S, Han Y, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hirata H, Hoek M, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Johnson A, Joo KK, Junkerkalefeld H, Kakuno H, Kaleta M, Kalita D, Kaliyar AB, Kandra J, Kang KH, Kang S, Karl R, Karyan G, Kawasaki T, Keil F, Ketter C, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumar R, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lai YT, Lam T, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Leboucher R, Le Diberder FR, Leitl P, Levit D, Lewis PM, Li C, Li LK, Li YB, Libby J, Lieret K, Liu QY, Liu ZQ, Liventsev D, Longo S, Lozar A, Lueck T, Lyu C, Ma Y, Maggiora M, Maharana SP, Maiti R, Maity S, Manfredi R, Manoni E, Manthei AC, Mantovano M, Marcantonio D, Marcello S, Marinas C, Martel L, Martellini C, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuda T, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Mehta R, Merola M, Metzner F, Milesi M, Miller C, Mirra M, Miyabayashi K, Miyake H, Mizuk R, Mohanty GB, Molina-Gonzalez N, Mondal S, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakamura KR, Nakao M, Nakayama H, Nakazawa H, Nakazawa Y, Narimani Charan A, Naruki M, Narwal D, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nazaryan G, Niebuhr C, Nisar NK, Nishida S, Ogawa S, Ono H, Onuki Y, Oskin P, Otani F, Pakhlov P, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Parham K, Park J, Park SH, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Raiz S, Ramirez Morales A, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Rizzuto LB, Robertson SH, Rodríguez Pérez D, Roehrken M, Roney JM, Rostomyan A, Rout N, Russo G, Sahoo D, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schnepf M, Schueler J, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shan W, Sharma C, Shen CP, Shi XD, Shillington T, Shiu JG, Shtol D, Shwartz B, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobie RJ, Sobotzik M, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stavroulakis P, Stefkova S, Stottler ZS, Stroili R, Strube J, Sue Y, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Takahashi M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tanigawa H, Tenchini F, Thaller A, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Tsaklidis I, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vismaya VS, Vitale L, Vobbilisetti V, Volpe R, Vossen A, Wach B, Wakai M, Wakeling HM, Wallner S, Wang E, Wang MZ, Wang XL, Wang Z, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yook YM, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhai Y, Zhang Y, Zhilich V, Zhou JS, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Search for a τ^{+}τ^{-} Resonance in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} Events with the Belle II Experiment. Phys Rev Lett 2023; 131:121802. [PMID: 37802942 DOI: 10.1103/physrevlett.131.121802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/08/2023] [Indexed: 10/08/2023]
Abstract
We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 particle coupling only to the heavier lepton families, a Higgs-like spin-0 particle that couples preferentially to charged leptons (leptophilic scalar), and an axionlike particle, respectively. We observe no evidence for a signal and set exclusion limits at 90% confidence level on the product of cross section and branching fraction into τ pairs, ranging from 0.7 to 24 fb, and on the couplings of these processes. We obtain world-leading constraints on the couplings for the leptophilic scalar model for masses above 6.5 GeV/c^{2} and for the axionlike particle model over the entire mass range.
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Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Aversano M, Babu V, Bae H, Bahinipati S, Bambade P, Banerjee S, Barrett M, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bodrov D, Bondar A, Borah J, Bozek A, Bračko M, Branchini P, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Cerasoli J, Chang P, Cheaib R, Cheema P, Chekelian V, Chen C, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cochran J, Corona L, Cremaldi LM, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, de Marino G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Fodor A, Forti F, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Garg R, Garmash A, Gaudino G, Gaur V, Gaz A, Gellrich A, Ghosh D, Giakoustidis G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Gradl W, Grammatico T, Granderath S, Graziani E, Greenwald D, Gruberová Z, Gu T, Guan Y, Gudkova K, Halder S, Han Y, Hara K, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hoek M, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jang EJ, Ji QP, Jia S, Jin Y, Johnson A, Joo KK, Junkerkalefeld H, Kaleta M, Kaliyar AB, Kandra J, Kang KH, Kang S, Kar S, Karyan G, Kawasaki T, Keil F, Ketter C, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kodyš P, Koga T, Kohani S, Kojima K, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lai YT, Lam T, Lange JS, Laurenza M, Leboucher R, Le Diberder FR, Leitl P, Levit D, Li C, Li LK, Libby J, Liu QY, Liu ZQ, Liventsev D, Longo S, Lueck T, Luo T, Lyu C, Ma Y, Maggiora M, Maharana SP, Maiti R, Maity S, Mancinelli G, Manfredi R, Manoni E, Mantovano M, Marcantonio D, Marcello S, Marinas C, Martel L, Martellini C, Martinov T, Massaccesi L, Masuda M, Matsuda T, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Mehta R, Meier F, Merola M, Metzner F, Milesi M, Miller C, Mirra M, Miyabayashi K, Mizuk R, Mohanty GB, Molina-Gonzalez N, Mondal S, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakazawa Y, Narimani Charan A, Naruki M, Natochii A, Nayak L, Nayak M, Nazaryan G, Nisar NK, Nishida S, Ono H, Onuki Y, Oskin P, Pakhlov P, Pakhlova G, Paladino A, Paoloni E, Pardi S, Parham K, Park H, Park SH, Passeri A, Patra S, Paul S, Pedlar TK, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Podobnik T, Pokharel S, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Raiz S, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Roehrken M, Roney JM, Rostomyan A, Rout N, Russo G, Sahoo D, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schmitt C, Schwanda C, Schwartz AJ, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shan W, Sharma C, Shi XD, Shillington T, Shiu JG, Shtol D, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobie RJ, Sobotzik M, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stavroulakis P, Stefkova S, Stottler ZS, Stroili R, Sumihama M, Sumisawa K, Sutcliffe W, Svidras H, Takahashi M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tenchini F, Thaller A, Tittel O, Tiwary R, Tonelli D, Torassa E, Trabelsi K, Tsaklidis I, Uchida M, Ueda I, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vismaya VS, Vitale L, Wach B, Wakai M, Wakeling HM, Wallner S, Wang E, Wang MZ, Wang Z, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Yin JH, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhang Y, Zhilich V, Zhou QD, Zhukova VI. Measurement of CP Violation in B^{0}→K_{S}^{0}π^{0} Decays at Belle II. Phys Rev Lett 2023; 131:111803. [PMID: 37774261 DOI: 10.1103/physrevlett.131.111803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/26/2023] [Indexed: 10/01/2023]
Abstract
We report a measurement of the CP-violating parameters C and S in B^{0}→K_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6} BB[over ¯] events recorded in e^{+}e^{-} collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. We obtain C=-0.04_{-0.15}^{+0.14}±0.05 and S=0.75_{-0.23}^{+0.20}±0.04, where the first uncertainties are statistical and the second are systematic.
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Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Bae H, Bahinipati S, Bambade P, Banerjee S, Bansal S, Barrett M, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhardwaj V, Bhuyan B, Bianchi F, Bilka T, Bilokin S, Biswas D, Bodrov D, Borah J, Bozek A, Bračko M, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Cerasoli J, Chang MC, Cheaib R, Cheema P, Chekelian V, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cochran J, Corona L, Cunliffe S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Dorigo M, Dossett D, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finocchiaro G, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Gaudino G, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Gradl W, Grammatico T, Granderath S, Graziani E, Gruberová Z, Gu T, Gudkova K, Halder S, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hohmann M, Hsu CL, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jacobs WW, Jang EJ, Ji QP, Jia S, Jin Y, Junkerkalefeld H, Kaleta M, Kaliyar AB, Karyan G, Kawasaki T, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Kohani S, Kojima K, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Križan P, Krokovny P, Kumar J, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lacaprara S, Lange JS, Laurenza M, Leboucher R, Le Diberder FR, Levit D, Lewis PM, Li LK, Libby J, Liptak Z, Liu QY, Liu ZQ, Liventsev D, Longo S, Lueck T, Lyu C, Ma Y, Maggiora M, Maharana SP, Maiti R, Maity S, Manfredi R, Manoni E, Manthei AC, Mantovano M, Marinas C, Martel L, Martellini C, Martini A, Massaccesi L, Masuda M, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Mizuk R, Mohanty GB, Moneta S, Mrvar M, Mussa R, Nakamura I, Nakamura KR, Nakao M, Nakazawa Y, Narimani Charan A, Naruki M, Narwal D, Natochii A, Nayak L, Nazaryan G, Nisar NK, Nishida S, Ono H, Onuki Y, Oskin P, Pakhlov P, Pakhlova G, Paladino A, Panta A, Pardi S, Park H, Park J, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Reif M, Reiter S, Ripp-Baudot I, Rizzo G, Rizzuto LB, Rocchetti P, Roney JM, Rostomyan A, Rout N, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Scavino B, Schwanda C, Seino Y, Selce A, Senyo K, Sevior ME, Sfienti C, Shan W, Sharma C, Shen CP, Shillington T, Shiu JG, Simon F, Singh JB, Skorupa J, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stroili R, Sue Y, Sumihama M, Sutcliffe W, Suzuki SY, Svidras H, Takizawa M, Tamponi U, Tanida K, Taniguchi N, Tenchini F, Tiwary R, Tonelli D, Torassa E, Trabelsi K, Tsaklidis I, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vismaya VS, Vitale L, Vossen A, Wallner S, Wang E, Wang MZ, Wang XL, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yin JH, Yook YM, Yoshihara K, Zhai Y, Zhang Y, Zhilich V, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic B-Meson Decays at Belle II. Phys Rev Lett 2023; 131:051804. [PMID: 37595249 DOI: 10.1103/physrevlett.131.051804] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/03/2023] [Accepted: 05/11/2023] [Indexed: 08/20/2023]
Abstract
We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron collisions collected with the Belle II detector. In events where the partner B meson is fully reconstructed, we use fits to the lepton momentum spectra above 1.3 GeV/c to obtain R(X_{e/μ})=1.007±0.009(stat)±0.019(syst), which is the most precise lepton-universality test of its kind and agrees with the standard-model expectation.
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Bodrov D, Pakhlov P, Adachi I, Aihara H, Said SA, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Banerjee S, Behera P, Belous K, Bennett J, Bessner M, Bhuyan B, Bilka T, Biswas D, Bobrov A, Bondar A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Das S, De Nardo G, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Epifanov D, Ferber T, Ferlewicz D, Fulsom BG, Gaur V, Garmash A, Giri A, Goldenzweig P, Graziani E, Greenwald D, Gu T, Guan Y, Gudkova K, Hadjivasiliou C, Halder S, Hayasaka K, Hayashii H, Hedges MT, Herrmann D, Hou WS, Hsu CL, Iijima T, Inami K, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Jang EJ, Ji QP, Jia S, Jin Y, Joo KK, Kalita D, Kaliyar AB, Kawasaki T, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar M, Kumar R, Kumara K, Kwon YJ, Lange JS, Lee SC, Li J, Li LK, Libby J, Lieret K, Lin YR, Liventsev D, Luo T, Ma Y, Masuda M, Matsuda T, Maurya SK, Meier F, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Mussa R, Nakao M, Narwal D, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nisar NK, Nishida S, Ogawa S, Oskin P, Pakhlova G, Pardi S, Park H, Park J, Park SH, Passeri A, Patra S, Paul S, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Rabusov A, Rout N, Russo G, Sandilya S, Sangal A, Santelj L, Savinov V, Schnell G, Schwanda C, Seino Y, Senyo K, Shan W, Shapkin M, Sharma C, Shiu JG, Singh JB, Sokolov A, Solovieva E, Starič M, Stottler ZS, Sumihama M, Takizawa M, Tamponi U, Tanida K, Tenchini F, Tiwary R, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno K, Uno S, Vahsen SE, Varner G, Vinokurova A, Vossen A, Wang D, Wang E, Wang MZ, Watanuki S, Werbycka O, Xu X, Yabsley BD, Yan W, Yang SB, Yelton J, Yin JH, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V. First Measurement of the Michel Parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} Decay at Belle. Phys Rev Lett 2023; 131:021801. [PMID: 37505960 DOI: 10.1103/physrevlett.131.021801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/06/2023] [Indexed: 07/30/2023]
Abstract
We report the first measurement of the Michel parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decay with a new method proposed just recently. The measurement is based on the reconstruction of the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} events with subsequent muon decay in flight in the Belle central drift chamber. The analyzed data sample of 988 fb^{-1} collected by the Belle detector corresponds to approximately 912×10^{6} τ^{+}τ^{-} pairs. We measure ξ^{'}=0.22±0.94(stat)±0.42(syst), which is in agreement with the standard model prediction of ξ^{'}=1. Statistical uncertainty dominates in this study, being a limiting factor, while systematic uncertainty is well under control. Our analysis proved the practicability of this promising method and its prospects for further precise measurement in future experiments.
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Watanuki S, de Marino G, Trabelsi K, Adachi I, Aihara H, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Banerjee S, Bauer M, Behera P, Belous K, Bessner M, Bhardwaj V, Bhuyan B, Biswas D, Bodrov D, Bonvicini G, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Cao L, Červenkov D, Chang MC, Cheon BG, Chilikin K, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Das S, De Nardo G, De Pietro G, Dhamija R, Di Capua F, Dong TV, Epifanov D, Ferber T, Ferlewicz D, Fulsom BG, Garg R, Gaur V, Garmash A, Giri A, Goldenzweig P, Graziani E, Gu T, Guan Y, Gudkova K, Hadjivasiliou C, Halder S, Han X, Hara T, Hayasaka K, Hayashii H, Herrmann D, Hou WS, Hsu CL, Inami K, Inguglia G, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Ji QP, Jia S, Jin Y, Joo KK, Kaliyar AB, Kichimi H, Kim CH, Kim DY, Kim KH, Kim YK, Kinoshita K, Kodyš P, Korobov A, Korpar S, Kovalenko E, Križan P, Krokovny P, Kuhr T, Kumar M, Kumara K, Kuzmin A, Kwon YJ, Lange JS, Laurenza M, Lee SC, Lewis P, Li LK, Li Y, Li Gioi L, Libby J, Lin YR, Liventsev D, Matsuda T, Maurya SK, Meier F, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Nakao M, Nayak L, Nayak M, Nisar NK, Nishida S, Ono H, Oskin P, Pakhlova G, Pardi S, Park H, Park J, Park SH, Passeri A, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Röhrken M, Rout N, Russo G, Sandilya S, Sangal A, Santelj L, Savinov V, Schnell G, Schwanda C, Seino Y, Senyo K, Sevior ME, Shan W, Shapkin M, Shiu JG, Shwartz B, Simon F, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Takizawa M, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Uno K, Uno S, van Tonder R, Varner G, Varvell KE, Wang D, Wang E, Wang MZ, Won E, Xu X, Yabsley BD, Yan W, Yang SB, Yelton J, Yusa Y, Zhang ZP, Zhilich V, Zhukova V. Search for the Lepton Flavor Violating Decays B^{+}→K^{+}τ^{±}ℓ^{∓} (ℓ=e, μ) at Belle. Phys Rev Lett 2023; 130:261802. [PMID: 37450824 DOI: 10.1103/physrevlett.130.261802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/04/2023] [Indexed: 07/18/2023]
Abstract
We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using the full data sample of 772×10^{6} BB[over ¯] pairs recorded by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. We find no evidence for B^{±}→K^{±}τℓ decays and set upper limits on their branching fractions at the 90% confidence level in the (1-3)×10^{-5} range. The obtained limits are the world's best results.
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Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Aushev T, Aushev V, Bae H, Bahinipati S, Bambade P, Banerjee S, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bodrov D, Bolz A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Chang MC, Chang P, Cheaib R, Cheema P, Chekelian V, Chen C, Chen YQ, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cunliffe S, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Fodor A, Forti F, Fulsom BG, Ganiev E, Garcia-Hernandez M, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Granderath S, Graziani E, Greenwald D, Gruberová Z, Gu T, Gudkova K, Guilliams J, Haigh H, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hohmann M, Hsu CL, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Joo KK, Junkerkalefeld H, Kakuno H, Kaliyar AB, Kang KH, Kang S, Karl R, Karyan G, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lam T, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Leboucher R, Le Diberder FR, Leitl P, Li C, Li LK, Libby J, Lieret K, Liptak Z, Liu QY, Liventsev D, Longo S, Lozar A, Lueck T, Luo T, Lyu C, Maggiora M, Maiti R, Maity S, Manfredi R, Manoni E, Marcello S, Marinas C, Martel L, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Mizuk R, Mohanty GB, Molina-Gonzalez N, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakamura KR, Nakao M, Nakayama H, Nakazawa Y, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nazaryan G, Nisar NK, Nishida S, Ogawa S, Ono H, Onuki Y, Oskin P, Pakhlov P, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Parham K, Park H, Park SH, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Piccolo M, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Raiz S, Ramirez Morales A, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Rodríguez Pérez D, Roney JM, Rostomyan A, Rout N, Russo G, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schueler J, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shen CP, Shillington T, Shiu JG, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Strube J, Sue Y, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Takizawa M, Tamponi U, Tanida K, Tanigawa H, Taniguchi N, Tenchini F, Thaller A, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Ushiroda Y, Vahsen SE, van Tonder R, Varvell KE, Vinokurova A, Vitale L, Vobbilisetti V, Wakeling HM, Wang E, Wang MZ, Wang XL, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yin JH, Yook YM, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhang Y, Zhilich V, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Search for an Invisible Z^{'} in a Final State with Two Muons and Missing Energy at Belle II. Phys Rev Lett 2023; 130:231801. [PMID: 37354391 DOI: 10.1103/physrevlett.130.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 04/19/2023] [Indexed: 06/26/2023]
Abstract
The L_{μ}-L_{τ} extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z^{'} boson that couples only to the heavier lepton families. We search for such a Z^{'} through its invisible decay in the process e^{+}e^{-}→μ^{+}μ^{-}Z^{'}. We use a sample of electron-positron collisions at a center-of-mass energy of 10.58 GeV collected by the Belle II experiment in 2019-2020, corresponding to an integrated luminosity of 79.7 fb^{-1}. We find no excess over the expected standard-model background. We set 90%-confidence-level upper limits on the cross section for this process as well as on the coupling of the model, which ranges from 3×10^{-3} at low Z^{'} masses to 1 at Z^{'} masses of 8 GeV/c^{2}.
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Lai YT, Adachi I, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Bahinipati S, Behera P, Belous K, Bennett J, Bessner M, Bhuyan B, Bilka T, Bobrov A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi SK, Choi Y, Cinabro D, Cunliffe S, Czank T, Das S, De Nardo G, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Ferber T, Fulsom BG, Garg R, Gaur V, Gabyshev N, Giri A, Goldenzweig P, Graziani E, Gu T, Guan Y, Gudkova K, Hadjivasiliou C, Halder S, Hartbrich O, Hayasaka K, Hayashii H, Higuchi T, Hou WS, Hsu CL, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jang EJ, Jia S, Jin Y, Kaliyar AB, Kang KH, Kim CH, Kim DY, Kim KH, Kim YK, Kinoshita K, Kodyš P, Konno T, Korobov A, Korpar S, Kovalenko E, Križan P, Krokovny P, Kumar M, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lam T, Lange JS, Laurenza M, Lee SC, Levit D, Li J, Li LK, Li YB, Li Gioi L, Libby J, Lieret K, Liventsev D, Martini A, Masuda M, Matvienko D, Meier F, Merola M, Metzner F, Mizuk R, Mohanty GB, Moon TJ, Mrvar M, Mussa R, Nakao M, Natochii A, Nayak L, Nisar NK, Nishida S, Ogawa S, Pakhlova G, Pang T, Pardi S, Park H, Park SH, Passeri A, Patra S, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Rostomyan A, Rout N, Russo G, Sahoo D, Sakai Y, Sandilya S, Sangal A, Santelj L, Sanuki T, Savinov V, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Sevior ME, Shapkin M, Sharma C, Shen CP, Shiu JG, Singh JB, Sokolov A, Solovieva E, Starič M, Stottler ZS, Strube JF, Sumihama M, Sumisawa K, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uglov T, Unno Y, Uno K, Uno S, Urquijo P, van Tonder R, Varner G, Varvell KE, Vinokurova A, Vossen A, Waheed E, Wang CH, Wang XL, Watanabe M, Watanuki S, Won E, Yabsley BD, Yan W, Yang SB, Ye H, Yelton J, Zhai Y, Zhang ZP, Zhilich V, Zhukova V. First Measurement of the B^{+}→π^{+}π^{0}π^{0} Branching Fraction and CP Asymmetry. Phys Rev Lett 2023; 130:181804. [PMID: 37204904 DOI: 10.1103/physrevlett.130.181804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/27/2023] [Indexed: 05/21/2023]
Abstract
We study B^{+}→π^{+}π^{0}π^{0} using 711 fb^{-1} of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure an inclusive branching fraction of (19.0±1.5±1.4)×10^{-6} and an inclusive CP asymmetry of (9.2±6.8±0.7)%, where the first uncertainties are statistical and the second are systematic, and a B^{+}→ρ(770)^{+}π^{0} branching fraction of (11.2±1.1±0.9_{-1.6}^{+0.8})×10^{-6}, where the third uncertainty is due to possible interference with B^{+}→ρ(1450)^{+}π^{0}. We present the first observation of a structure around 1 GeV/c^{2} in the π^{0}π^{0} mass spectrum, with a significance of 6.4σ, and measure a branching fraction to be (6.9±0.9±0.6)×10^{-6}. We also report a measurement of local CP asymmetry in this structure.
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Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Aushev T, Aushev V, Bae H, Bahinipati S, Bambade P, Banerjee S, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Bilokin S, Biswas D, Bodrov D, Bolz A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Chang MC, Chang P, Cheaib R, Cheema P, Chekelian V, Chen YQ, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cunliffe S, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Dujany G, Ecker P, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Flood K, Fodor A, Forti F, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Gradl W, Granderath S, Graziani E, Greenwald D, Gruberová Z, Gu T, Gudkova K, Guilliams J, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Joo KK, Junkerkalefeld H, Kakuno H, Kaliyar AB, Kandra J, Kang KH, Kang S, Karl R, Karyan G, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar R, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lam T, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Leboucher R, Le Diberder FR, Leitl P, Lewis PM, Li C, Li LK, Li YB, Libby J, Lieret K, Liptak Z, Liu QY, Liventsev D, Longo S, Lozar A, Lueck T, Luo T, Lyu C, Maggiora M, Maiti R, Maity S, Manfredi R, Manoni E, Manthei A, Marcello S, Marinas C, Martel L, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuda T, Matsuoka K, Matvienko D, Maurya SK, McKenna JA, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Mizuk R, Mohanty GB, Molina-Gonzalez N, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakamura KR, Nakao M, Nakayama H, Nakazawa Y, Narimani Charan A, Naruki M, Natochii A, Nayak L, Nayak M, Nazaryan G, Niebuhr C, Nisar NK, Nishida S, Ogawa S, Ono H, Onuki Y, Oskin P, Pakhlov P, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Parham K, Park H, Park SH, Paschen B, Passeri A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raeuber G, Raiz S, Ramirez Morales A, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Rodríguez Pérez D, Roney JM, Rostomyan A, Rout N, Russo G, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schueler J, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shen CP, Shi XD, Shillington T, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Skorupa J, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Strube J, Sue Y, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Takizawa M, Tamponi U, Tanida K, Tanigawa H, Tenchini F, Thaller A, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vitale L, Vobbilisetti V, Wakeling HM, Wang E, Wang MZ, Wang XL, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Wiechczynski J, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yook YM, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhang Y, Zhilich V, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Search for Lepton-Flavor-Violating τ Decays to a Lepton and an Invisible Boson at Belle II. Phys Rev Lett 2023; 130:181803. [PMID: 37204890 DOI: 10.1103/physrevlett.130.181803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/23/2023] [Indexed: 05/21/2023]
Abstract
We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of 62.8 fb^{-1}, produced by the SuperKEKB collider and collected with the Belle II detector. We search for an excess in the lepton-energy spectrum of the known τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ} and τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decays. We report 95% confidence-level upper limits on the branching-fraction ratio B(τ^{-}→e^{-}α)/B(τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ}) in the range (1.1-9.7)×10^{-3} and on B(τ^{-}→μ^{-}α)/B(τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ}) in the range (0.7-12.2)×10^{-3} for α masses between 0 and 1.6 GeV/c^{2}. These results provide the most stringent bounds on invisible boson production from τ decays.
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Ma Y, Yelton J, Tanida K, Adachi I, Ahn JK, Aihara H, Al Said S, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Bahinipati S, Banerjee S, Behera P, Belous K, Bennett J, Bessner M, Bhuyan B, Bilka T, Biswas D, Bobrov A, Bodrov D, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chen A, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Das S, De Nardo G, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Epifanov D, Ferber T, Ferlewicz D, Fulsom BG, Garg R, Gaur V, Garmash A, Giri A, Goldenzweig P, Golob B, Graziani E, Gudkova K, Hadjivasiliou C, Halder S, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Hsu CL, Inami K, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Jang EJ, Jia S, Jin Y, Kaliyar AB, Kang KH, Kawasaki T, Kiesling C, Kim CH, Kim DY, Kim YK, Kinoshita K, Kodyš P, Korobov A, Korpar S, Kovalenko E, Križan P, Krokovny P, Kumar R, Kumara K, Kwon YJ, Lam T, Lange JS, Lee SC, Lewis P, Li LK, Li Y, Li Gioi L, Libby J, Lieret K, Lin YR, Liventsev D, Luo T, Masuda M, Matsuda T, Matvienko D, Maurya SK, Meier F, Merola M, Metzner F, Miyabayashi K, Mohanty GB, Mussa R, Nakamura I, Nakano T, Nakao M, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nisar NK, Nishida S, Ogawa S, Ono H, Oskin P, Pakhlov P, Pakhlova G, Pardi S, Park H, Park J, Patra S, Paul S, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Rostomyan A, Rout N, Russo G, Sandilya S, Santelj L, Savinov V, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Sevior ME, Shan W, Shapkin M, Sharma C, Shen CP, Shiu JG, Simon F, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tenchini F, Uchida M, Uehara S, Uglov T, Unno Y, Uno K, Uno S, Urquijo P, Usov Y, Vahsen SE, van Tonder R, Varner G, Vinokurova A, Vossen A, Wang D, Wang MZ, Watanabe M, Watanuki S, Werbycka O, Won E, Xu X, Yabsley BD, Yan W, Yang SB, Yin JH, Yuan CZ, Yuan L, Zhang ZP, Zhilich V, Zhukova V. First Observation of Λπ^{+} and Λπ^{-} Signals near the K[over ¯]N(I=1) Mass Threshold in Λ_{c}^{+}→Λπ^{+}π^{+}π^{-} Decay. Phys Rev Lett 2023; 130:151903. [PMID: 37115880 DOI: 10.1103/physrevlett.130.151903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Using the data sample of 980 fb^{-1} collected with the Belle detector operating at the KEKB asymmetric-energy e^{+}e^{-} collider, we present the results of an investigation of the Λπ^{+} and Λπ^{-} invariant mass distributions looking for substructure in the decay Λ_{c}^{+}→Λπ^{+}π^{+}π^{-}. We find a significant signal in each mass distribution. When interpreted as resonances, we find for the Λπ^{+} (Λπ^{-}) combination a mass of 1434.3±0.6(stat)±0.9(syst) MeV/c^{2} [1438.5±0.9(stat)±2.5(syst) MeV/c^{2}], an intrinsic width of 11.5±2.8(stat)±5.3(syst) MeV/c^{2} [33.0±7.5(stat)±23.6(syst) MeV/c^{2}] with a significance of 7.5σ (6.2σ). As these two signals are very close to the K[over ¯]N threshold, we also investigate the possibility of a K[over ¯]N cusp, and find that we cannot discriminate between these two interpretations due to the limited size of the data sample.
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Adachi I, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Aushev T, Aushev V, Bae H, Bambade P, Banerjee S, Baudot J, Bauer M, Beaubien A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bodrov D, Bolz A, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Chang MC, Cheema P, Chekelian V, Chen YQ, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cunliffe S, Das S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dreyer S, Dubey S, Dujany G, Eliachevitch M, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finocchiaro G, Fodor A, Forti F, Fulsom BG, Ganiev E, Gaur V, Gaz A, Gellrich A, Ghevondyan G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Granderath S, Graziani E, Greenwald D, Gu T, Guan Y, Gudkova K, Guilliams J, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hirata H, Hohmann M, Hsu CL, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Joo KK, Junkerkalefeld H, Kaliyar AB, Kang KH, Karl R, Karyan G, Ketter C, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kumar R, Kumara K, Kunigo T, Kuzmin A, Kwon YJ, Lacaprara S, Lam T, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Leboucher R, Lewis PM, Li C, Li LK, Libby J, Lieret K, Liptak Z, Liu QY, Liventsev D, Longo S, Lozar A, Lueck T, Lyu C, Maggiora M, Maiti R, Manfredi R, Manoni E, Marcello S, Marinas C, Martel L, Martini A, Martinov T, Massaccesi L, Masuda M, Matsuoka K, Maurya SK, McKenna JA, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Mizuk R, Molina-Gonzalez N, Moneta S, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakao M, Nakazawa Y, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nazaryan G, Nisar NK, Ogawa S, Ono H, Onuki Y, Oskin P, Paladino A, Panta A, Paoloni E, Pardi S, Park H, Park SH, Paschen B, Passeri A, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Raiz S, Ramirez Morales A, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Roney JM, Rostomyan A, Rout N, Russo G, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schueler J, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shen CP, Shi XD, Shillington T, Sibidanov A, Singh JB, Skorupa J, Sobie RJ, Soffer A, Solovieva E, Spataro S, Starič M, Stefkova S, Stottler ZS, Stroili R, Sue Y, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Takizawa M, Tanida K, Tanigawa H, Tenchini F, Thaller A, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Vinokurova A, Vitale L, Vobbilisetti V, Wakeling HM, Wang E, Wang MZ, Warburton A, Watanuki S, Welsch M, Wessel C, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yook YM, Yoshihara K, Yuan CZ, Zani L, Zhang Y, Zhou XY, Zhukova VI, Žlebčík R. Observation of e^{+}e^{-}→ωχ_{bJ}(1P) and Search for X_{b}→ωϒ(1S) at sqrt[s] near 10.75 GeV. Phys Rev Lett 2023; 130:091902. [PMID: 36930912 DOI: 10.1103/physrevlett.130.091902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
We study the processes e^{+}e^{-}→ωχ_{bJ}(1P) (J=0, 1, or 2) using samples at center-of-mass energies sqrt[s]=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb^{-1} of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχ_{bJ}(1P) signals at sqrt[s]=10.745 GeV. By combining Belle II data with Belle results at sqrt[s]=10.867 GeV, we find energy dependencies of the Born cross sections for e^{+}e^{-}→ωχ_{b1,b2}(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at sqrt[s]=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c^{2}.
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Abudinén F, Aggarwal L, Ahmed H, Ahn JK, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Babu V, Bae H, Bambade P, Banerjee S, Bansal S, Baudot J, Bauer M, Baur A, Beaubien A, Becker J, Bennett JV, Bernieri E, Bernlochner FU, Bertacchi V, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhardwaj V, Bianchi F, Bilka T, Biswas D, Bodrov D, Bolz A, Bonvicini G, Bozek A, Bračko M, Branchini P, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Chang MC, Chang P, Cheaib R, Cheema P, Chen C, Chen YQ, Chen YT, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cremaldi LM, Cunliffe S, Dattola F, De La Cruz-Burelo E, De La Motte SA, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dujany G, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finocchiaro G, Flood K, Fodor A, Forti F, Frey A, Fulsom BG, Gabrielli A, Ganiev E, Garcia-Hernandez M, Gaz A, Gellrich A, Ghevondyan G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Gradl W, Granderath S, Greenwald D, Gu T, Guan Y, Gudkova K, Guilliams J, Halder S, Hara K, Hartbrich O, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hohmann M, Humair T, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Iwasaki Y, Jackson P, Jacobs WW, Jaffe DE, Ji QP, Jin Y, Junkerkalefeld H, Kaleta M, Kandra J, Kang KH, Karl R, Karyan G, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar R, Kumara K, Kunigo T, Kwon YJ, Lacaprara S, Lam T, Lanceri L, Lange JS, Laurenza M, Leboucher R, Lee SC, Leitl P, Levit D, Li LK, Li SX, Li YB, Libby J, Liptak Z, Liu QY, Liventsev D, Longo S, Lueck T, Lyu C, Maggiora M, Maiti R, Maity S, Manfredi R, Manoni E, Marcello S, Marinas C, Martel L, Martini A, Massaccesi L, Masuda M, Matsuoka K, Matvienko D, McKenna JA, Meier F, Merola M, Milesi M, Miller C, Miyabayashi K, Mohanty GB, Molina-Gonzalez N, Moneta S, Moon H, Moser HG, Mrvar M, Mussa R, Nakamura I, Nakao M, Nakayama H, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nazaryan G, Niebuhr C, Nisar NK, Nishida S, Nishimura K, Ono H, Oskin P, Oxford ER, Pakhlova G, Paladino A, Panta A, Paoloni E, Pardi S, Parham K, Park H, Park SH, Passeri A, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raiz S, Reif M, Reiter S, Ripp-Baudot I, Rizzo G, Robertson SH, Roney JM, Rostomyan A, Rout N, Russo G, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schwanda C, Schwartz AJ, Seino Y, Selce A, Senyo K, Serrano J, Sfienti C, Shen CP, Shillington T, Shiu JG, Sibidanov A, Simon F, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stroili R, Strube J, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Takahashi M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tanigawa H, Taniguchi N, Tenchini F, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vitale L, Vobbilisetti V, Waheed E, Wakeling HM, Wang E, Wang MZ, Wang XL, Warburton A, Watanuki S, Welsch M, Wessel C, Wiechczynski J, Windel H, Won E, Xu XP, Yabsley BD, Yamada S, Yang SB, Ye H, Yelton J, Yin JH, Yoshihara K, Yusa Y, Zhang Y, Zhilich V, Zhou QD, Zhukova VI, Žlebčík R. Measurement of the Λ_{c}^{+} Lifetime. Phys Rev Lett 2023; 130:071802. [PMID: 36867815 DOI: 10.1103/physrevlett.130.071802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/25/2022] [Indexed: 06/18/2023]
Abstract
An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}→pK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the ϒ(4S) resonance, is 207.2 fb^{-1}. The result, τ(Λ_{c}^{+})=203.20±0.89±0.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.
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Abudinén F, Adachi I, Aggarwal L, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Babu V, Bahinipati S, Bambade P, Banerjee S, Bansal S, Baudot J, Baur A, Beaubien A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertemes M, Bertholet E, Bessner M, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bobrov A, Bodrov D, Bolz A, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Bussino S, Campajola M, Casarosa G, Cecchi C, Chekelian V, Chen C, Chen YQ, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cunliffe S, Dattola F, de Marino G, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Dujany G, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T, Ferlewicz D, Fillinger T, Finck C, Finocchiaro G, Flood K, Fodor A, Forti F, Frey A, Fulsom BG, Ganiev E, Garcia-Hernandez M, Gaur V, Gaz A, Gellrich A, Giordano R, Giri A, Gobbo B, Godang R, Goldenzweig P, Gradl W, Granderath S, Graziani E, Greenwald D, Gu T, Gudkova K, Guilliams J, Hadjivasiliou C, Hara K, Hara T, Hayasaka K, Hayashii H, Hazra S, Hearty C, Hedges MT, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hoek M, Hohmann M, Hsu CL, Iijima T, Inami K, Inguglia G, Ipsita N, Ishikawa A, Ito S, Itoh R, Iwasaki M, Jackson P, Jacobs WW, Jaffe DE, Jang EJ, Ji QP, Jia S, Jin Y, Junkerkalefeld H, Kakuno H, Kaliyar AB, Kandra J, Kang KH, Karl R, Karyan G, Kawasaki T, Ketter C, Kichimi H, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kinoshita K, Kodyš P, Koga T, Kohani S, Kojima K, Konno T, Korobov A, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Križan P, Krokovny P, Kuhr T, Kumar R, Kumara K, Kunigo T, Kwon YJ, Lacaprara S, Lai YT, Lam T, Lange JS, Laurenza M, Leboucher R, Lee SC, Li LK, Li YB, Libby J, Lieret K, Liu QY, Liventsev D, Longo S, Lozar A, Lueck T, Lyu C, Maggiora M, Maiti R, Maity S, Manfredi R, Manoni E, Marcello S, Marinas C, Martel L, Martini A, Massaccesi L, Masuda M, Matsuoka K, McKenna JA, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Mohanty GB, Molina-Gonzalez N, Moneta S, Moon H, Mrvar M, Nakamura I, Nakamura KR, Nakao M, Nakayama H, Narimani Charan A, Naruki M, Natkaniec Z, Natochii A, Nayak L, Nayak M, Nisar NK, Nishida S, Nishimura K, Ogawa S, Ono H, Oskin P, Pakhlova G, Paladino A, Panta A, Pardi S, Parham K, Park H, Park SH, Passeri A, Patra S, Paul S, Pedlar TK, Piccolo M, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat L, Praz C, Prell S, Prencipe E, Prim MT, Purwar H, Rad N, Rados P, Raiz S, Ramirez Morales A, Reif M, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Robertson SH, Rodríguez Pérez D, Roney JM, Rostomyan A, Rout N, Sahoo D, Sanders DA, Sandilya S, Santelj L, Sato Y, Scavino B, Schueler J, Schwanda C, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shillington T, Shiu JG, Sibidanov A, Simon F, Singh JB, Skorupa J, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Sumihama M, Sumisawa K, Sutcliffe W, Suzuki SY, Svidras H, Tabata M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tanigawa H, Tenchini F, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Ueda I, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Ushiroda Y, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vitale L, Vobbilisetti V, Waheed E, Wakeling HM, Wang E, Wang MZ, Warburton A, Watanabe M, Watanuki S, Welsch M, Wessel C, Windel H, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yin JH, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhang Y, Zhilich V, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Search for a Dark Photon and an Invisible Dark Higgs Boson in μ^{+}μ^{-} and Missing Energy Final States with the Belle II Experiment. Phys Rev Lett 2023; 130:071804. [PMID: 36867830 DOI: 10.1103/physrevlett.130.071804] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 11/29/2022] [Indexed: 06/18/2023]
Abstract
The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical particles predicted in many dark sector models. We search for the simultaneous production of A^{'} and h^{'} in the dark Higgsstrahlung process e^{+}e^{-}→A^{'}h^{'} with A^{'}→μ^{+}μ^{-} and h^{'} invisible in electron-positron collisions at a center-of-mass energy of 10.58 GeV in data collected by the Belle II experiment in 2019. With an integrated luminosity of 8.34 fb^{-1}, we observe no evidence for signal. We obtain exclusion limits at 90% Bayesian credibility in the range of 1.7-5.0 fb on the cross section and in the range of 1.7×10^{-8}-200×10^{-8} on the effective coupling ϵ^{2}×α_{D} for the A^{'} mass in the range of 4.0 GeV/c^{2}<M_{A^{'}}<9.7 GeV/c^{2} and for the h^{'} mass M_{h^{'}}<M_{A^{'}}, where ϵ is the mixing strength between the standard model and the dark photon and α_{D} is the coupling of the dark photon to the dark Higgs boson. Our limits are the first in this mass range.
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Li YB, Shen CP, Adachi I, Aihara H, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Bahinipati S, Behera P, Belous K, Bennett J, Bessner M, Bhardwaj V, Bhuyan B, Bilka T, Bodrov D, Borah J, Bozek A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chang P, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Das S, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Dossett D, Epifanov D, Fulsom BG, Garg R, Gaur V, Garmash A, Giri A, Goldenzweig P, Graziani E, Gu T, Guan Y, Gudkova K, Hadjivasiliou C, Hayasaka K, Hayashii H, Hou WS, Hsu CL, Iijima T, Inami K, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jang EJ, Ji QP, Jia S, Jin Y, Joo KK, Karyan G, Kawasaki T, Kichimi H, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kindo H, Kinoshita K, Kodyš P, Konno T, Korobov A, Korpar S, Kovalenko E, Križan P, Krokovny P, Kumar M, Kumar R, Kumara K, Kwon YJ, Lam T, Lange JS, Laurenza M, Lee SC, Li CH, Li J, Li LK, Li Y, Li Gioi L, Libby J, Lieret K, Liventsev D, Masuda M, Matsuda T, Matvienko D, Maurya SK, Meier F, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Nakamura I, Nakao M, Natkaniec Z, Natochii A, Nayak L, Niiyama M, Nisar NK, Nishida S, Ogawa S, Ono H, Oskin P, Pakhlov P, Pakhlova G, Pardi S, Park H, Park SH, Patra S, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Rout N, Russo G, Sandilya S, Santelj L, Savinov V, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Sevior ME, Shapkin M, Sharma C, Shiu JG, Singh JB, Sokolov A, Solovieva E, Starič M, Stottler ZS, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, van Tonder R, Varner G, Varvell KE, Waheed E, Wang E, Wang MZ, Watanabe M, Watanuki S, Werbycka O, Wiechczynski J, Won E, Yabsley BD, Yan W, Yang SB, Yelton J, Yin JH, Yuan CZ, Yusa Y, Zhai Y, Zhang ZP, Zhilich V, Zhukova V. Evidence of a New Excited Charmed Baryon Decaying to Σ_{c}(2455)^{0,++}π^{±}. Phys Rev Lett 2023; 130:031901. [PMID: 36763394 DOI: 10.1103/physrevlett.130.031901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 07/31/2022] [Accepted: 08/23/2022] [Indexed: 06/18/2023]
Abstract
We present the study of B[over ¯]^{0}→Σ_{c}(2455)^{0,++}π^{±}p[over ¯] decays based on 772×10^{6} BB[over ¯] events collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The Σ_{c}(2455)^{0,++} candidates are reconstructed via their decay to Λ_{c}^{+}π^{∓} and Λ_{c}^{+} decays to pK^{-}π^{+}, pK_{S}^{0}, and Λπ^{+} final states. The corresponding branching fractions are measured to be B(B[over ¯]^{0}→Σ_{c}(2455)^{0}π^{+}p[over ¯])=(1.09±0.06±0.07)×10^{-4} and B(B[over ¯]^{0}→Σ_{c}(2455)^{++}π^{-}p[over ¯])=(1.84±0.11±0.12)×10^{-4}, which are consistent with the world average values with improved precision. A new structure is found in the M_{Σ_{c}(2455)^{0,++}π^{±}} spectrum with a significance of 4.2σ including systematic uncertainty. The structure is possibly an excited Λ_{c}^{+} and is tentatively named Λ_{c}(2910)^{+}. Its mass and width are measured to be (2913.8±5.6±3.8) MeV/c^{2} and (51.8±20.0±18.8) MeV, respectively. The products of branching fractions for the Λ_{c}(2910)^{+} are measured to be B(B[over ¯]^{0}→Λ_{c}(2910)^{+}p[over ¯])×B(Λ_{c}(2910)^{+}→Σ_{c}(2455)^{0}π^{+})=(9.5±3.6±1.6)×10^{-6} and B(B[over ¯]^{0}→Λ_{c}(2910)^{+}p[over ¯])×B(Λ_{c}(2910)^{+}→Σ_{c}(2455)^{++}π^{-})=(1.24±0.35±0.10)×10^{-5}. Here, the first and second uncertainties are statistical and systematic, respectively.
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Jia S, Shen CP, Adachi I, Aihara H, Al Said S, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Behera P, Belous K, Bennett J, Bessner M, Bhardwaj V, Bhuyan B, Bilka T, Bobrov A, Bodrov D, Bonvicini G, Borah J, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Das S, Dash N, De Nardo G, De Pietro G, Dhamija R, Di Capua F, Doležal Z, Dong TV, Epifanov D, Ferber T, Ferlewicz D, Fulsom BG, Garg R, Gaur V, Gabyshev N, Giri A, Goldenzweig P, Golob B, Graziani E, Guan Y, Gudkova K, Hadjivasiliou C, Hara T, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jang EJ, Jin Y, Joo KK, Kahn J, Kaliyar AB, Kang KH, Kawasaki T, Kiesling C, Kim CH, Kim DY, Kim KH, Kim YK, Kinoshita K, Kodyš P, Kohani S, Konno T, Korobov A, Korpar S, Kovalenko E, Križan P, Kroeger R, Krokovny P, Kumar M, Kumar R, Kumara K, Kwon YJ, Lam T, Laurenza M, Lee SC, Li J, Li LK, Li Y, Li YB, Li Gioi L, Libby J, Lieret K, Liventsev D, Martini A, Masuda M, Matsuda T, Matvienko D, Maurya SK, Meier F, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Mussa R, Nakao M, Narwal D, Natkaniec Z, Natochii A, Nayak L, Nisar NK, Nishida S, Nishimura K, Ogawa K, Ogawa S, Ono H, Oskin P, Pakhlov P, Pakhlova G, Pang T, Pardi S, Park SH, Patra S, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Prim MT, Röhrken M, Rostomyan A, Rout N, Russo G, Sahoo D, Sandilya S, Sangal A, Santelj L, Sanuki T, Savinov V, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Sevior ME, Shapkin M, Sharma C, Shebalin V, Shiu JG, Shwartz B, Singh JB, Sokolov A, Solovieva E, Stanič S, Starič M, Stottler ZS, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno K, Uno S, Urquijo P, Vahsen SE, Van Tonder R, Varner G, Vinokurova A, Waheed E, Wang D, Wang E, Wang MZ, Watanuki S, Won E, Yabsley BD, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yusa Y, Zhai Y, Zhang ZP, Zhilich V, Zhukova V. Search for a Light Higgs Boson in Single-Photon Decays of ϒ(1S) Using ϒ(2S)→π^{+}π^{-}ϒ(1S) Tagging Method. Phys Rev Lett 2022; 128:081804. [PMID: 35275679 DOI: 10.1103/physrevlett.128.081804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
We search for a light Higgs boson (A^{0}) decaying into a τ^{+}τ^{-} or μ^{+}μ^{-} pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π^{+}π^{-}ϒ(1S) transitions, using 158×10^{6} ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A^{0} signals in the mass range from the τ^{+}τ^{-} or μ^{+}μ^{-} threshold to 9.2 GeV/c^{2} are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA^{0} and A^{0}→τ^{+}τ^{-} varying from 3.8×10^{-6} to 1.5×10^{-4}. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA^{0}(→τ^{+}τ^{-}) production. For A^{0}→μ^{+}μ^{-}, the upper limits on the product branching fractions for ϒ(1S)→γA^{0} and A^{0}→μ^{+}μ^{-} are at the same level as the world average limits, and vary from 3.1×10^{-7} to 1.6×10^{-5}. The upper limits at 90% credibility level on the Yukawa coupling f_{ϒ(1S)} and mixing angle sinθ_{A^{0}} are also given.
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Affiliation(s)
- S Jia
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - C P Shen
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - I Adachi
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - H Aihara
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - S Al Said
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
| | - D M Asner
- Brookhaven National Laboratory, Upton, New York 11973
| | - H Atmacan
- University of Cincinnati, Cincinnati, Ohio 45221
| | - T Aushev
- National Research University Higher School of Economics, Moscow 101000
| | - R Ayad
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
| | - V Babu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - P Behera
- Indian Institute of Technology, Madras, Chennai 600036
| | - K Belous
- Institute for High Energy Physics, Protvino 142281
| | - J Bennett
- University of Mississippi, University, Mississippi 38677
| | - M Bessner
- University of Hawaii, Honolulu, Hawaii 96822
| | - V Bhardwaj
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - B Bhuyan
- Indian Institute of Technology, Guwahati, Assam 781039
| | - T Bilka
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - A Bobrov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - D Bodrov
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - G Bonvicini
- Wayne State University, Detroit, Michigan 48202
| | - J Borah
- Indian Institute of Technology, Guwahati, Assam 781039
| | - M Bračko
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | | | - T E Browder
- University of Hawaii, Honolulu, Hawaii 96822
| | - A Budano
- INFN-Sezione di Roma Tre, I-00146 Roma
| | - M Campajola
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | - D Červenkov
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - M-C Chang
- Department of Physics, Fu Jen Catholic University, Taipei 24205
| | - P Chang
- Department of Physics, National Taiwan University, Taipei 10617
| | - V Chekelian
- Max-Planck-Institut für Physik, 80805 München
| | - A Chen
- National Central University, Chung-li 32054
| | - B G Cheon
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Chilikin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - H E Cho
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Cho
- Korea Institute of Science and Technology Information, Daejeon 34141
| | - S-J Cho
- Yonsei University, Seoul 03722
| | - S-K Choi
- Chung-Ang University, Seoul 06974
| | - Y Choi
- Sungkyunkwan University, Suwon 16419
| | | | - D Cinabro
- Wayne State University, Detroit, Michigan 48202
| | - S Cunliffe
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - S Das
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - N Dash
- Indian Institute of Technology, Madras, Chennai 600036
| | - G De Nardo
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | | | - R Dhamija
- Indian Institute of Technology, Hyderabad, Telangana 502285
| | - F Di Capua
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | - Z Doležal
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - T V Dong
- Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000
| | - D Epifanov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Ferber
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - D Ferlewicz
- School of Physics, University of Melbourne, Victoria 3010
| | - B G Fulsom
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R Garg
- Panjab University, Chandigarh 160014
| | - V Gaur
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - N Gabyshev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Giri
- Indian Institute of Technology, Hyderabad, Telangana 502285
| | - P Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - B Golob
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | | | - Y Guan
- University of Cincinnati, Cincinnati, Ohio 45221
| | - K Gudkova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - C Hadjivasiliou
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - T Hara
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | | | | | - M T Hedges
- University of Hawaii, Honolulu, Hawaii 96822
| | - W-S Hou
- Department of Physics, National Taiwan University, Taipei 10617
| | - K Inami
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - G Inguglia
- Institute of High Energy Physics, Vienna 1050
| | - A Ishikawa
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - R Itoh
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Iwasaki
- Osaka City University, Osaka 558-8585
| | - Y Iwasaki
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - W W Jacobs
- Indiana University, Bloomington, Indiana 47408
| | - E-J Jang
- Gyeongsang National University, Jinju 52828
| | - Y Jin
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - K K Joo
- Chonnam National University, Gwangju 61186
| | - J Kahn
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - A B Kaliyar
- Tata Institute of Fundamental Research, Mumbai 400005
| | - K H Kang
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - T Kawasaki
- Kitasato University, Sagamihara 252-0373
| | - C Kiesling
- Max-Planck-Institut für Physik, 80805 München
| | - C H Kim
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - D Y Kim
- Soongsil University, Seoul 06978
| | - K-H Kim
- Yonsei University, Seoul 03722
| | - Y-K Kim
- Yonsei University, Seoul 03722
| | - K Kinoshita
- University of Cincinnati, Cincinnati, Ohio 45221
| | - P Kodyš
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - S Kohani
- University of Hawaii, Honolulu, Hawaii 96822
| | - T Konno
- Kitasato University, Sagamihara 252-0373
| | - A Korobov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - S Korpar
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | - E Kovalenko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - P Križan
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - R Kroeger
- University of Mississippi, University, Mississippi 38677
| | - P Krokovny
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - M Kumar
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - R Kumar
- Punjab Agricultural University, Ludhiana 141004
| | - K Kumara
- Wayne State University, Detroit, Michigan 48202
| | | | - T Lam
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - M Laurenza
- INFN-Sezione di Roma Tre, I-00146 Roma
- Dipartimento di Matematica e Fisica, Università di Roma Tre, I-00146 Roma
| | - S C Lee
- Kyungpook National University, Daegu 41566
| | - J Li
- Kyungpook National University, Daegu 41566
| | - L K Li
- University of Cincinnati, Cincinnati, Ohio 45221
| | - Y Li
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - Y B Li
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - L Li Gioi
- Max-Planck-Institut für Physik, 80805 München
| | - J Libby
- Indian Institute of Technology, Madras, Chennai 600036
| | - K Lieret
- Ludwig Maximilians University, 80539 Munich
| | - D Liventsev
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Wayne State University, Detroit, Michigan 48202
| | - A Martini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - M Masuda
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
- Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192
| | - D Matvienko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | - S K Maurya
- Indian Institute of Technology, Guwahati, Assam 781039
| | - F Meier
- Duke University, Durham, North Carolina 27708
| | - M Merola
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | - F Metzner
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | | | - R Mizuk
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - G B Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
| | - R Mussa
- INFN-Sezione di Torino, I-10125 Torino
| | - M Nakao
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - D Narwal
- Indian Institute of Technology, Guwahati, Assam 781039
| | - Z Natkaniec
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - A Natochii
- University of Hawaii, Honolulu, Hawaii 96822
| | - L Nayak
- Indian Institute of Technology, Hyderabad, Telangana 502285
| | - N K Nisar
- Brookhaven National Laboratory, Upton, New York 11973
| | - S Nishida
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Nishimura
- University of Hawaii, Honolulu, Hawaii 96822
| | - K Ogawa
- Niigata University, Niigata 950-2181
| | - S Ogawa
- Toho University, Funabashi 274-8510
| | - H Ono
- Nippon Dental University, Niigata 951-8580
- Niigata University, Niigata 950-2181
| | - P Oskin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - P Pakhlov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Moscow Physical Engineering Institute, Moscow 115409
| | - G Pakhlova
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - T Pang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - S Pardi
- INFN-Sezione di Napoli, I-80126 Napoli
| | - S-H Park
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - S Patra
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - S Paul
- Max-Planck-Institut für Physik, 80805 München
- Department of Physics, Technische Universität München, 85748 Garching
| | | | | | - L E Piilonen
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - T Podobnik
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | | | | | - M Röhrken
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - A Rostomyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - N Rout
- Indian Institute of Technology, Madras, Chennai 600036
| | - G Russo
- Università di Napoli Federico II, I-80126 Napoli
| | - D Sahoo
- Iowa State University, Ames, Iowa 50011
| | - S Sandilya
- Indian Institute of Technology, Hyderabad, Telangana 502285
| | - A Sangal
- University of Cincinnati, Cincinnati, Ohio 45221
| | - L Santelj
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - T Sanuki
- Department of Physics, Tohoku University, Sendai 980-8578
| | - V Savinov
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - G Schnell
- Department of Physics, University of the Basque Country UPV/EHU, 48080 Bilbao
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao
| | - J Schueler
- University of Hawaii, Honolulu, Hawaii 96822
| | - C Schwanda
- Institute of High Energy Physics, Vienna 1050
| | - Y Seino
- Niigata University, Niigata 950-2181
| | - K Senyo
- Yamagata University, Yamagata 990-8560
| | - M E Sevior
- School of Physics, University of Melbourne, Victoria 3010
| | - M Shapkin
- Institute for High Energy Physics, Protvino 142281
| | - C Sharma
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - V Shebalin
- University of Hawaii, Honolulu, Hawaii 96822
| | - J-G Shiu
- Department of Physics, National Taiwan University, Taipei 10617
| | - B Shwartz
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - J B Singh
- Panjab University, Chandigarh 160014
| | - A Sokolov
- Institute for High Energy Physics, Protvino 142281
| | - E Solovieva
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - S Stanič
- University of Nova Gorica, 5000 Nova Gorica
| | - M Starič
- J. Stefan Institute, 1000 Ljubljana
| | - Z S Stottler
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - M Sumihama
- Gifu University, Gifu 501-1193
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
| | - K Sumisawa
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - T Sumiyoshi
- Tokyo Metropolitan University, Tokyo 192-0397
| | | | - M Takizawa
- J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Meson Science Laboratory, Cluster for Pioneering Research, RIKEN, Saitama 351-0198
- Showa Pharmaceutical University, Tokyo 194-8543
| | - U Tamponi
- INFN-Sezione di Torino, I-10125 Torino
| | - K Tanida
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195
| | - F Tenchini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - K Trabelsi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - M Uchida
- Tokyo Institute of Technology, Tokyo 152-8550
| | - S Uehara
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - T Uglov
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - Y Unno
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Uno
- Niigata University, Niigata 950-2181
| | - S Uno
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Urquijo
- School of Physics, University of Melbourne, Victoria 3010
| | - S E Vahsen
- University of Hawaii, Honolulu, Hawaii 96822
| | | | - G Varner
- University of Hawaii, Honolulu, Hawaii 96822
| | - A Vinokurova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - E Waheed
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - D Wang
- University of Florida, Gainesville, Florida 32611
| | - E Wang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - M-Z Wang
- Department of Physics, National Taiwan University, Taipei 10617
| | | | - E Won
- Korea University, Seoul 02841
| | - B D Yabsley
- School of Physics, University of Sydney, New South Wales 2006
| | - W Yan
- Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026
| | | | - H Ye
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - J Yelton
- University of Florida, Gainesville, Florida 32611
| | - J H Yin
- Korea University, Seoul 02841
| | - Y Yusa
- Niigata University, Niigata 950-2181
| | - Y Zhai
- Iowa State University, Ames, Iowa 50011
| | - Z P Zhang
- Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026
| | - V Zhilich
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - V Zhukova
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
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Cao L, Sutcliffe W, Van Tonder R, Bernlochner FU, Adachi I, Aihara H, Asner DM, Aushev T, Ayad R, Babu V, Bahinipati S, Behera P, Belous K, Bennett J, Bessner M, Bilka T, Biswal J, Bobrov A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chang P, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Czank T, Dash N, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Dubey S, Epifanov D, Ferber T, Ferlewicz D, Frey A, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Giri A, Goldenzweig P, Gu T, Gudkova K, Halder S, Hara T, Hartbrich O, Hayasaka K, Hernandez Villanueva M, Hou WS, Hsu CL, Inami K, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Jang EJ, Jia S, Jin Y, Joo KK, Kahn J, Kang KH, Kichimi H, Kiesling C, Kim CH, Kim DY, Kim SH, Kim YK, Kimmel TD, Kinoshita K, Kodyš P, Konno T, Korobov A, Korpar S, Kovalenko E, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kumar M, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lee SC, Li CH, Li J, Li LK, Li YB, Li Gioi L, Libby J, Lieret K, Liventsev D, MacQueen C, Masuda M, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Mohanty S, Mrvar M, Nakao M, Natochii A, Nayak L, Niiyama M, Nisar NK, Nishida S, Nishimura K, Ogawa S, Ono H, Onuki Y, Oskin P, Pakhlova G, Pardi S, Park H, Park SH, Passeri A, Patra S, Paul S, Pedlar TK, Piilonen LE, Podobnik T, Popov V, Prencipe E, Prim MT, Röhrken M, Rostomyan A, Rout N, Rozanska M, Russo G, Sahoo D, Sandilya S, Sangal A, Santelj L, Sanuki T, Savinov V, Schnell G, Schueler J, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Sevior ME, Shapkin M, Sharma C, Shen CP, Shiu JG, Shwartz B, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tao Y, Tenchini F, Trabelsi K, Uchida M, Uglov T, Uno S, Urquijo P, Vahsen SE, Varner G, Varvell KE, Waheed E, Wang CH, Wang E, Wang MZ, Wang P, Wang XL, Watanabe M, Watanuki S, Werbycka O, Won E, Yabsley BD, Yan W, Yang SB, Ye H, Yin JH, Zhang ZP, Zhilich V, Zhukova V. Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays. Phys Rev Lett 2021; 127:261801. [PMID: 35029480 DOI: 10.1103/physrevlett.127.261801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/09/2021] [Indexed: 06/14/2023]
Abstract
The first measurements of differential branching fractions of inclusive semileptonic B→X_{u}ℓ^{+}ν_{ℓ} decays are performed using the full Belle data set of 711 fb^{-1} of integrated luminosity at the ϒ(4S) resonance and for ℓ=e, μ. With the availability of these measurements, new avenues for future shape-function model-independent determinations of the Cabibbo-Kobayashi-Maskawa matrix element |V_{ub}| can be pursued to gain new insights in the existing tension with respect to exclusive determinations. The differential branching fractions are reported as a function of the lepton energy, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting the backgrounds from semileptonic B→X_{c}ℓ^{+}ν_{ℓ} decays and other processes, and corrected for resolution and acceptance effects.
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Affiliation(s)
- L Cao
- University of Bonn, 53115 Bonn
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | | | | | | | - I Adachi
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - H Aihara
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - D M Asner
- Brookhaven National Laboratory, Upton, New York 11973
| | - T Aushev
- National Research University Higher School of Economics, Moscow 101000
| | - R Ayad
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
| | - V Babu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - S Bahinipati
- Indian Institute of Technology Bhubaneswar, Satya Nagar 751007
| | - P Behera
- Indian Institute of Technology Madras, Chennai 600036
| | - K Belous
- Institute for High Energy Physics, Protvino 142281
| | - J Bennett
- University of Mississippi, University, Mississippi 38677
| | - M Bessner
- University of Hawaii, Honolulu, Hawaii 96822
| | - T Bilka
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - J Biswal
- J. Stefan Institute, 1000 Ljubljana
| | - A Bobrov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - M Bračko
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | | | - T E Browder
- University of Hawaii, Honolulu, Hawaii 96822
| | - A Budano
- INFN-Sezione di Roma Tre, I-00146 Roma
| | - M Campajola
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | - D Červenkov
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - M-C Chang
- Department of Physics, Fu Jen Catholic University, Taipei 24205
| | - P Chang
- Department of Physics, National Taiwan University, Taipei 10617
| | - B G Cheon
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Chilikin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - H E Cho
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Cho
- Korea Institute of Science and Technology Information, Daejeon 34141
| | - S-J Cho
- Yonsei University, Seoul 03722
| | - Y Choi
- Sungkyunkwan University, Suwon 16419
| | - S Choudhury
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - D Cinabro
- Wayne State University, Detroit, Michigan 48202
| | - S Cunliffe
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - T Czank
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - N Dash
- Indian Institute of Technology Madras, Chennai 600036
| | | | - R Dhamija
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - F Di Capua
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | | | - Z Doležal
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - T V Dong
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - S Dubey
- University of Hawaii, Honolulu, Hawaii 96822
| | - D Epifanov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Ferber
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - D Ferlewicz
- School of Physics, University of Melbourne, Victoria 3010
| | - A Frey
- II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen
| | - B G Fulsom
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R Garg
- Panjab University, Chandigarh 160014
| | - V Gaur
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - N Gabyshev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Garmash
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Giri
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - P Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - T Gu
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - K Gudkova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - S Halder
- Tata Institute of Fundamental Research, Mumbai 400005
| | - T Hara
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - O Hartbrich
- University of Hawaii, Honolulu, Hawaii 96822
| | | | | | - W-S Hou
- Department of Physics, National Taiwan University, Taipei 10617
| | - C-L Hsu
- School of Physics, University of Sydney, New South Wales 2006
| | - K Inami
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - A Ishikawa
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - R Itoh
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Iwasaki
- Osaka City University, Osaka 558-8585
| | - W W Jacobs
- Indiana University, Bloomington, Indiana 47408
| | - E-J Jang
- Gyeongsang National University, Jinju 52828
| | - S Jia
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - Y Jin
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - K K Joo
- Chonnam National University, Gwangju 61186
| | - J Kahn
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - K H Kang
- Kyungpook National University, Daegu 41566
| | - H Kichimi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - C Kiesling
- Max-Planck-Institut für Physik, 80805 München
| | - C H Kim
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - D Y Kim
- Soongsil University, Seoul 06978
| | - S H Kim
- Seoul National University, Seoul 08826
| | - Y-K Kim
- Yonsei University, Seoul 03722
| | - T D Kimmel
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - K Kinoshita
- University of Cincinnati, Cincinnati, Ohio 45221
| | - P Kodyš
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - T Konno
- Kitasato University, Sagamihara 252-0373
| | - A Korobov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - S Korpar
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | - E Kovalenko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - P Križan
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - R Kroeger
- University of Mississippi, University, Mississippi 38677
| | - P Krokovny
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Kuhr
- Ludwig Maximilians University, 80539 Munich
| | - R Kulasiri
- Kennesaw State University, Kennesaw, Georgia 30144
| | - M Kumar
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - R Kumar
- Punjab Agricultural University, Ludhiana 141004
| | - K Kumara
- Wayne State University, Detroit, Michigan 48202
| | - A Kuzmin
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | | | - S C Lee
- Kyungpook National University, Daegu 41566
| | - C H Li
- Liaoning Normal University, Dalian 116029
| | - J Li
- Kyungpook National University, Daegu 41566
| | - L K Li
- University of Cincinnati, Cincinnati, Ohio 45221
| | - Y B Li
- Peking University, Beijing 100871
| | - L Li Gioi
- Max-Planck-Institut für Physik, 80805 München
| | - J Libby
- Indian Institute of Technology Madras, Chennai 600036
| | - K Lieret
- Ludwig Maximilians University, 80539 Munich
| | - D Liventsev
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Wayne State University, Detroit, Michigan 48202
| | - C MacQueen
- School of Physics, University of Melbourne, Victoria 3010
| | - M Masuda
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
- Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
| | - M Merola
- INFN-Sezione di Napoli, I-80126 Napoli
- Università di Napoli Federico II, I-80126 Napoli
| | - F Metzner
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | | | - R Mizuk
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - G B Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
| | - S Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
- Utkal University, Bhubaneswar 751004
| | - M Mrvar
- Institute of High Energy Physics, Vienna 1050
| | - M Nakao
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - A Natochii
- University of Hawaii, Honolulu, Hawaii 96822
| | - L Nayak
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - M Niiyama
- Kyoto Sangyo University, Kyoto 603-8555
| | - N K Nisar
- Brookhaven National Laboratory, Upton, New York 11973
| | - S Nishida
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Nishimura
- University of Hawaii, Honolulu, Hawaii 96822
| | - S Ogawa
- Toho University, Funabashi 274-8510
| | - H Ono
- Nippon Dental University, Niigata 951-8580
- Niigata University, Niigata 950-2181
| | - Y Onuki
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - P Oskin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - G Pakhlova
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - S Pardi
- INFN-Sezione di Napoli, I-80126 Napoli
| | - H Park
- Kyungpook National University, Daegu 41566
| | - S-H Park
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - A Passeri
- INFN-Sezione di Roma Tre, I-00146 Roma
| | - S Patra
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - S Paul
- Max-Planck-Institut für Physik, 80805 München
- Department of Physics, Technische Universität München, 85748 Garching
| | | | - L E Piilonen
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - T Podobnik
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - V Popov
- National Research University Higher School of Economics, Moscow 101000
| | | | | | - M Röhrken
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - A Rostomyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - N Rout
- Indian Institute of Technology Madras, Chennai 600036
| | - M Rozanska
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - G Russo
- Università di Napoli Federico II, I-80126 Napoli
| | - D Sahoo
- Tata Institute of Fundamental Research, Mumbai 400005
| | - S Sandilya
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - A Sangal
- University of Cincinnati, Cincinnati, Ohio 45221
| | - L Santelj
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - T Sanuki
- Department of Physics, Tohoku University, Sendai 980-8578
| | - V Savinov
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - G Schnell
- Department of Physics, University of the Basque Country UPV/EHU, 48080 Bilbao
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao
| | - J Schueler
- University of Hawaii, Honolulu, Hawaii 96822
| | - C Schwanda
- Institute of High Energy Physics, Vienna 1050
| | - A J Schwartz
- University of Cincinnati, Cincinnati, Ohio 45221
| | - Y Seino
- Niigata University, Niigata 950-2181
| | - K Senyo
- Yamagata University, Yamagata 990-8560
| | - M E Sevior
- School of Physics, University of Melbourne, Victoria 3010
| | - M Shapkin
- Institute for High Energy Physics, Protvino 142281
| | - C Sharma
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - C P Shen
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - J-G Shiu
- Department of Physics, National Taiwan University, Taipei 10617
| | - B Shwartz
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - F Simon
- Max-Planck-Institut für Physik, 80805 München
| | - A Sokolov
- Institute for High Energy Physics, Protvino 142281
| | - E Solovieva
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - M Starič
- J. Stefan Institute, 1000 Ljubljana
| | - J F Strube
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | | | - T Sumiyoshi
- Tokyo Metropolitan University, Tokyo 192-0397
| | - M Takizawa
- J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Meson Science Laboratory, Cluster for Pioneering Research, RIKEN, Saitama 351-0198
- Showa Pharmaceutical University, Tokyo 194-8543
| | - U Tamponi
- INFN-Sezione di Torino, I-10125 Torino
| | - K Tanida
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195
| | - Y Tao
- University of Florida, Gainesville, Florida 32611
| | - F Tenchini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - K Trabelsi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - M Uchida
- Tokyo Institute of Technology, Tokyo 152-8550
| | - T Uglov
- National Research University Higher School of Economics, Moscow 101000
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - S Uno
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Urquijo
- School of Physics, University of Melbourne, Victoria 3010
| | - S E Vahsen
- University of Hawaii, Honolulu, Hawaii 96822
| | - G Varner
- University of Hawaii, Honolulu, Hawaii 96822
| | - K E Varvell
- School of Physics, University of Sydney, New South Wales 2006
| | - E Waheed
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - C H Wang
- National United University, Miao Li 36003
| | - E Wang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - M-Z Wang
- Department of Physics, National Taiwan University, Taipei 10617
| | - P Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
| | - X L Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | | | - S Watanuki
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - O Werbycka
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - E Won
- Korea University, Seoul 02841
| | - B D Yabsley
- School of Physics, University of Sydney, New South Wales 2006
| | - W Yan
- Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026
| | | | - H Ye
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - J H Yin
- Korea University, Seoul 02841
| | - Z P Zhang
- Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026
| | - V Zhilich
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - V Zhukova
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
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Abudinén F, Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev V, Babu V, Bacher S, Bae H, Baehr S, Bahinipati S, Bambade P, Banerjee S, Bansal S, Barrett M, Baudot J, Bauer M, Baur A, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhardwaj V, Bianchi F, Bilka T, Bilokin S, Biswas D, Bobrov A, Bodrov D, Bolz A, Bozek A, Bračko M, Branchini P, Braun N, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Červenkov D, Chang MC, Chang P, Cheaib R, Chekelian V, Chen C, Chen YT, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cremaldi LM, Cunliffe S, Czank T, Dattola F, De La Cruz-Burelo E, de Marino G, De Nardo G, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dubey S, Duell S, Dujany G, Ecker P, Epifanov D, Ferber T, Ferlewicz D, Finocchiaro G, Flood K, Fodor A, Forti F, Fulsom BG, Gabrielli A, Gabyshev N, Gaz A, Gellrich A, Giakoustidis G, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Golob B, Gradl W, Graziani E, Greenwald D, Gu T, Guan Y, Gudkova K, Guilliams J, Hadjivasiliou C, Halder S, Hara K, Hara T, Hartbrich O, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hirata H, Hoek M, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jaffe DE, Jang EJ, Jia S, Jin Y, Junkerkalefeld H, Kakuno H, Kaliyar AB, Kandra J, Kang KH, Karl R, Karyan G, Kato Y, Kawasaki T, Kiesling C, Kim CH, Kim DY, Kim YK, Kim Y, Kimmel TD, Kinoshita K, Kodyš P, Koga T, Kohani S, Konno T, Korpar S, Kovalenko E, Kowalewski R, Kraetzschmar TMG, Krinner F, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumar R, Kumara K, Kurz S, Kuzmin A, Kwon YJ, Lacaprara S, Lalwani K, Lam T, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Le Diberder FR, Lee SC, Leitl P, Levit D, Li C, Li LK, Libby J, Lieret K, Liptak Z, Liu QY, Liventsev D, Longo S, Lueck T, Lyu C, Manfredi R, Manoni E, Marinas C, Martini A, Matsuda T, Matsuoka K, Matvienko D, McKenna JA, Meier F, Merola M, Metzner F, Miller C, Miyabayashi K, Mizuk R, Mohanty GB, Molina-Gonzalez N, Moon H, Moser HG, Mrvar M, Murphy C, Mussa R, Nakamura I, Nakamura KR, Nakao M, Nakazawa H, Natkaniec Z, Natochii A, Nazaryan G, Niebuhr C, Niiyama M, Nisar NK, Nishida S, Nishimura K, Ogawa S, Onishchuk Y, Ono H, Onuki Y, Oskin P, Oxford ER, Ozaki H, Pakhlov P, Paladino A, Pang T, Panta A, Paoloni E, Pardi S, Park H, Park SH, Paschen B, Passeri A, Pathak A, Patra S, Paul S, Pedlar TK, Peruzzi I, Peschke R, Pestotnik R, Pham F, Piccolo M, Piilonen LE, Pinna Angioni G, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat G, Popov V, Praz C, Prell S, Prencipe E, Prim MT, Purohit MV, Purwar H, Rad N, Rados P, Raiz S, Reiter S, Remnev M, Ripp-Baudot I, Rizzo G, Rizzuto LB, Robertson SH, Roney JM, Rostomyan A, Rout N, Rozanska M, Sahoo D, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schueler J, Schwanda C, Schwartz AJ, Seino Y, Selce A, Senyo K, Serrano J, Sfienti C, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Strube J, Sumihama M, Sutcliffe W, Suzuki SY, Svidras H, Tabata M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tanigawa H, Taniguchi N, Tenchini F, Tiwary R, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Tsuboyama T, Ueda I, Uehara S, Uematsu Y, Uglov T, Unger K, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Usov YV, Vahsen SE, van Tonder R, Varner GS, Vinokurova A, Vitale L, Vossen A, Waheed E, Wakeling HM, Wang E, Wang MZ, Wang XL, Warburton A, Watanabe M, Welsch M, Wessel C, Wiechczynski J, Won E, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yoshihara K, Yusa Y, Zani L, Zhilich V, Zhou QD, Zhou XY, Zhukova VI, Žlebčík R. Precise Measurement of the D^{0} and D^{+} Lifetimes at Belle II. Phys Rev Lett 2021; 127:211801. [PMID: 34860075 DOI: 10.1103/physrevlett.127.211801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.
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Affiliation(s)
- F Abudinén
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | - I Adachi
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - K Adamczyk
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - L Aggarwal
- Panjab University, Chandigarh 160014, India
| | - H Ahmed
- St. Francis Xavier University, Antigonish, Nova Scotia, B2G 2W5, Canada
| | - H Aihara
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - N Akopov
- Alikhanyan National Science Laboratory, Yerevan 0036, Armenia
| | - A Aloisio
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | - N Anh Ky
- Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000, Vietnam
- Institute of Physics, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - D M Asner
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Atmacan
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - V Aushev
- Taras Shevchenko National Univ. of Kiev, Kiev, Ukraine
| | - V Babu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S Bacher
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - H Bae
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - S Baehr
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - S Bahinipati
- Indian Institute of Technology Bhubaneswar, Satya Nagar 751007, India
| | - P Bambade
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - Sw Banerjee
- University of Louisville, Louisville, Kentucky 40292, USA
| | - S Bansal
- Panjab University, Chandigarh 160014, India
| | - M Barrett
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - J Baudot
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg, France
| | - M Bauer
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - A Baur
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - J Becker
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - P K Behera
- Indian Institute of Technology Madras, Chennai 600036, India
| | - J V Bennett
- University of Mississippi, University, Mississippi 38677, USA
| | - E Bernieri
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | | | - M Bertemes
- Institute of High Energy Physics, Vienna 1050, Austria
| | - E Bertholet
- Tel Aviv University, School of Physics and Astronomy, Tel Aviv, 69978, Israel
| | - M Bessner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Bettarini
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - V Bhardwaj
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306, India
| | - F Bianchi
- INFN Sezione di Torino, I-10125 Torino, Italy
- Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
| | - T Bilka
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | - S Bilokin
- Ludwig Maximilians University, 80539 Munich, Germany
| | - D Biswas
- University of Louisville, Louisville, Kentucky 40292, USA
| | - A Bobrov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - D Bodrov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Moscow 101000, Russian Federation
| | - A Bolz
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - A Bozek
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - M Bračko
- J. Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor, Slovenia
| | - P Branchini
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - N Braun
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - T E Browder
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - A Budano
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - S Bussino
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
- Dipartimento di Matematica e Fisica, Università di Roma Tre, I-00146 Roma, Italy
| | - M Campajola
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | - L Cao
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - G Casarosa
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - C Cecchi
- INFN Sezione di Perugia, I-06123 Perugia, Italy
- Dipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy
| | - D Červenkov
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | - M-C Chang
- Department of Physics, Fu Jen Catholic University, Taipei 24205, Taiwan
| | - P Chang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - R Cheaib
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - V Chekelian
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - C Chen
- Iowa State University, Ames, Iowa 50011, USA
| | - Y-T Chen
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - B G Cheon
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763, South Korea
| | - K Chilikin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
| | | | - H-E Cho
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763, South Korea
| | - K Cho
- Korea Institute of Science and Technology Information, Daejeon 34141, South Korea
| | - S-J Cho
- Yonsei University, Seoul 03722, South Korea
| | - S-K Choi
- Gyeongsang National University, Jinju 52828, South Korea
| | - S Choudhury
- Indian Institute of Technology Hyderabad, Telangana 502285, India
| | - D Cinabro
- Wayne State University, Detroit, Michigan 48202, USA
| | - L Corona
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - L M Cremaldi
- University of Mississippi, University, Mississippi 38677, USA
| | - S Cunliffe
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - T Czank
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583, Japan
| | - F Dattola
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - E De La Cruz-Burelo
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360, Mexico
| | - G de Marino
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - G De Nardo
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | - G De Pietro
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - R de Sangro
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - M Destefanis
- INFN Sezione di Torino, I-10125 Torino, Italy
- Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
| | - S Dey
- Tel Aviv University, School of Physics and Astronomy, Tel Aviv, 69978, Israel
| | - A De Yta-Hernandez
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360, Mexico
| | - A Di Canto
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Di Capua
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | | | - Z Doležal
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | | | - T V Dong
- Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000, Vietnam
| | - M Dorigo
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | - K Dort
- Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - D Dossett
- School of Physics, University of Melbourne, Victoria 3010, Australia
| | - S Dubey
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Duell
- University of Bonn, 53115 Bonn, Germany
| | - G Dujany
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg, France
| | - P Ecker
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - D Epifanov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - T Ferber
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - D Ferlewicz
- School of Physics, University of Melbourne, Victoria 3010, Australia
| | - G Finocchiaro
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - K Flood
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - A Fodor
- McGill University, Montréal, Québec, H3A 2T8, Canada
| | - F Forti
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - B G Fulsom
- Pacific Northwest National Laboratory, Richland, Washington, D.C. 99352, USA
| | - A Gabrielli
- INFN Sezione di Trieste, I-34127 Trieste, Italy
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
| | - N Gabyshev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - A Gaz
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova, Italy
| | - A Gellrich
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | | | - R Giordano
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | - A Giri
- Indian Institute of Technology Hyderabad, Telangana 502285, India
| | - A Glazov
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - B Gobbo
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | - R Godang
- University of South Alabama, Mobile, Alabama 36688, USA
| | - P Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - B Golob
- J. Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - W Gradl
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - E Graziani
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - D Greenwald
- Department of Physics, Technische Universität München, 85748 Garching, Germany
| | - T Gu
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - Y Guan
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - K Gudkova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - J Guilliams
- University of Mississippi, University, Mississippi 38677, USA
| | - C Hadjivasiliou
- Pacific Northwest National Laboratory, Richland, Washington, D.C. 99352, USA
| | - S Halder
- Tata Institute of Fundamental Research, Mumbai 400005, India
| | - K Hara
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - T Hara
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - O Hartbrich
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K Hayasaka
- Niigata University, Niigata 950-2181, Japan
| | - H Hayashii
- Nara Women's University, Nara 630-8506, Japan
| | - S Hazra
- Tata Institute of Fundamental Research, Mumbai 400005, India
| | - C Hearty
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2, Canada
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - I Heredia de la Cruz
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360, Mexico
- Consejo Nacional de Ciencia y Tecnología, Mexico City 03940, Mexico
| | | | - A Hershenhorn
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - T Higuchi
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583, Japan
| | - E C Hill
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - H Hirata
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - M Hoek
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Hohmann
- School of Physics, University of Melbourne, Victoria 3010, Australia
| | - C-L Hsu
- School of Physics, University of Sydney, New South Wales 2006, Australia
| | - T Humair
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - T Iijima
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602, Japan
| | - K Inami
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - G Inguglia
- Institute of High Energy Physics, Vienna 1050, Austria
| | - A Ishikawa
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - R Itoh
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - M Iwasaki
- Osaka City University, Osaka 558-8585, Japan
| | - Y Iwasaki
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - W W Jacobs
- Indiana University, Bloomington, Indiana 47408, USA
| | - D E Jaffe
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E-J Jang
- Gyeongsang National University, Jinju 52828, South Korea
| | - S Jia
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443, China
| | - Y Jin
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | | | - H Kakuno
- Tokyo Metropolitan University, Tokyo 192-0397, Japan
| | - A B Kaliyar
- Tata Institute of Fundamental Research, Mumbai 400005, India
| | - J Kandra
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | - K H Kang
- Kyungpook National University, Daegu 41566, South Korea
| | - R Karl
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - G Karyan
- Alikhanyan National Science Laboratory, Yerevan 0036, Armenia
| | - Y Kato
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602, Japan
| | - T Kawasaki
- Kitasato University, Sagamihara 252-0373, Japan
| | - C Kiesling
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - C-H Kim
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763, South Korea
| | - D Y Kim
- Soongsil University, Seoul 06978, South Korea
| | - Y-K Kim
- Yonsei University, Seoul 03722, South Korea
| | - Y Kim
- Korea University, Seoul 02841, South Korea
| | - T D Kimmel
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - K Kinoshita
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - P Kodyš
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
| | - T Koga
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - S Kohani
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - T Konno
- Kitasato University, Sagamihara 252-0373, Japan
| | - S Korpar
- J. Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor, Slovenia
| | - E Kovalenko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - R Kowalewski
- University of Victoria, Victoria, British Columbia, V8W 3P6, Canada
| | | | - F Krinner
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - P Križan
- J. Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - P Krokovny
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - T Kuhr
- Ludwig Maximilians University, 80539 Munich, Germany
| | - J Kumar
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Kumar
- Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
| | - R Kumar
- Punjab Agricultural University, Ludhiana 141004, India
| | - K Kumara
- Wayne State University, Detroit, Michigan 48202, USA
| | - S Kurz
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - A Kuzmin
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - Y-J Kwon
- Yonsei University, Seoul 03722, South Korea
| | - S Lacaprara
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - K Lalwani
- Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
| | - T Lam
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - L Lanceri
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | - J S Lange
- Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - M Laurenza
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
- Dipartimento di Matematica e Fisica, Università di Roma Tre, I-00146 Roma, Italy
| | - K Lautenbach
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille, France
| | - F R Le Diberder
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - S C Lee
- Kyungpook National University, Daegu 41566, South Korea
| | - P Leitl
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - D Levit
- Department of Physics, Technische Universität München, 85748 Garching, Germany
| | - C Li
- Liaoning Normal University, Dalian 116029, China
| | - L K Li
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - J Libby
- Indian Institute of Technology Madras, Chennai 600036, India
| | - K Lieret
- Ludwig Maximilians University, 80539 Munich, Germany
| | - Z Liptak
- Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Q Y Liu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - D Liventsev
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
- Wayne State University, Detroit, Michigan 48202, USA
| | - S Longo
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - T Lueck
- Ludwig Maximilians University, 80539 Munich, Germany
| | - C Lyu
- University of Bonn, 53115 Bonn, Germany
| | - R Manfredi
- INFN Sezione di Trieste, I-34127 Trieste, Italy
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
| | - E Manoni
- INFN Sezione di Perugia, I-06123 Perugia, Italy
| | - C Marinas
- Instituto de Fisica Corpuscular, Paterna 46980, Spain
| | - A Martini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192, Japan
| | - K Matsuoka
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - D Matvienko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - J A McKenna
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - F Meier
- Duke University, Durham, North Carolina 27708, USA
| | - M Merola
- INFN Sezione di Napoli, I-80126 Napoli, Italy
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
| | - F Metzner
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - C Miller
- University of Victoria, Victoria, British Columbia, V8W 3P6, Canada
| | | | - R Mizuk
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Moscow 101000, Russian Federation
| | - G B Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005, India
| | - N Molina-Gonzalez
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360, Mexico
| | - H Moon
- Korea University, Seoul 02841, South Korea
| | - H-G Moser
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - M Mrvar
- Institute of High Energy Physics, Vienna 1050, Austria
| | - C Murphy
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583, Japan
| | - R Mussa
- INFN Sezione di Torino, I-10125 Torino, Italy
| | - I Nakamura
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - K R Nakamura
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - M Nakao
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - H Nakazawa
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Z Natkaniec
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - A Natochii
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - G Nazaryan
- Alikhanyan National Science Laboratory, Yerevan 0036, Armenia
| | - C Niebuhr
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M Niiyama
- Kyoto Sangyo University, Kyoto 603-8555, Japan
| | - N K Nisar
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Nishida
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - K Nishimura
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Ogawa
- Toho University, Funabashi 274-8510, Japan
| | - Y Onishchuk
- Taras Shevchenko National Univ. of Kiev, Kiev, Ukraine
| | - H Ono
- Niigata University, Niigata 950-2181, Japan
| | - Y Onuki
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - P Oskin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - E R Oxford
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Ozaki
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - P Pakhlov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
- Moscow Physical Engineering Institute, Moscow 115409, Russian Federation
| | - A Paladino
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - T Pang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - A Panta
- University of Mississippi, University, Mississippi 38677, USA
| | - E Paoloni
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - S Pardi
- INFN Sezione di Napoli, I-80126 Napoli, Italy
| | - H Park
- Kyungpook National University, Daegu 41566, South Korea
| | - S-H Park
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - B Paschen
- University of Bonn, 53115 Bonn, Germany
| | - A Passeri
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - A Pathak
- University of Louisville, Louisville, Kentucky 40292, USA
| | - S Patra
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306, India
| | - S Paul
- Department of Physics, Technische Universität München, 85748 Garching, Germany
| | - T K Pedlar
- Luther College, Decorah, Iowa 52101, USA
| | - I Peruzzi
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - R Peschke
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - R Pestotnik
- J. Stefan Institute, 1000 Ljubljana, Slovenia
| | - F Pham
- School of Physics, University of Melbourne, Victoria 3010, Australia
| | - M Piccolo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - L E Piilonen
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - G Pinna Angioni
- INFN Sezione di Torino, I-10125 Torino, Italy
- Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
| | | | - T Podobnik
- J. Stefan Institute, 1000 Ljubljana, Slovenia
| | - S Pokharel
- University of Mississippi, University, Mississippi 38677, USA
| | - G Polat
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille, France
| | - V Popov
- National Research University Higher School of Economics, Moscow 101000, Russian Federation
| | - C Praz
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S Prell
- Iowa State University, Ames, Iowa 50011, USA
| | - E Prencipe
- Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - M T Prim
- University of Bonn, 53115 Bonn, Germany
| | - M V Purohit
- Okinawa Institute of Science and Technology, Okinawa 904-0495, Japan
| | - H Purwar
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - N Rad
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - P Rados
- Institute of High Energy Physics, Vienna 1050, Austria
| | - S Raiz
- INFN Sezione di Trieste, I-34127 Trieste, Italy
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
| | - S Reiter
- Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - M Remnev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - I Ripp-Baudot
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg, France
| | - G Rizzo
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - L B Rizzuto
- J. Stefan Institute, 1000 Ljubljana, Slovenia
| | - S H Robertson
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2, Canada
- McGill University, Montréal, Québec, H3A 2T8, Canada
| | - J M Roney
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2, Canada
- University of Victoria, Victoria, British Columbia, V8W 3P6, Canada
| | - A Rostomyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - N Rout
- Indian Institute of Technology Madras, Chennai 600036, India
| | - M Rozanska
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - D Sahoo
- Iowa State University, Ames, Iowa 50011, USA
| | - D A Sanders
- University of Mississippi, University, Mississippi 38677, USA
| | - S Sandilya
- Indian Institute of Technology Hyderabad, Telangana 502285, India
| | - A Sangal
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - L Santelj
- J. Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Y Sato
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - V Savinov
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - B Scavino
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - J Schueler
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - C Schwanda
- Institute of High Energy Physics, Vienna 1050, Austria
| | - A J Schwartz
- University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Y Seino
- Niigata University, Niigata 950-2181, Japan
| | - A Selce
- ENEA Casaccia, I-00123 Roma, Italy
- INFN Sezione di Roma Tre, I-00146 Roma, Italy
| | - K Senyo
- Yamagata University, Yamagata 990-8560, Japan
| | - J Serrano
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille, France
| | - C Sfienti
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - J-G Shiu
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - B Shwartz
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - A Sibidanov
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - F Simon
- Max-Planck-Institut für Physik, 80805 München, Germany
| | - R J Sobie
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2, Canada
- University of Victoria, Victoria, British Columbia, V8W 3P6, Canada
| | - A Soffer
- Tel Aviv University, School of Physics and Astronomy, Tel Aviv, 69978, Israel
| | - A Sokolov
- Institute for High Energy Physics, Protvino 142281, Russian Federation
| | - E Solovieva
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - S Spataro
- INFN Sezione di Torino, I-10125 Torino, Italy
- Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
| | - B Spruck
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - M Starič
- J. Stefan Institute, 1000 Ljubljana, Slovenia
| | - S Stefkova
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - Z S Stottler
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - R Stroili
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova, Italy
| | - J Strube
- Pacific Northwest National Laboratory, Richland, Washington, D.C. 99352, USA
| | - M Sumihama
- Gifu University, Gifu 501-1193, Japan
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan
| | | | - S Y Suzuki
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - H Svidras
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - M Tabata
- Chiba University, Chiba 263-8522, Japan
| | - M Takizawa
- J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
- Meson Science Laboratory, Cluster for Pioneering Research, RIKEN, Saitama 351-0198, Japan
- Showa Pharmaceutical University, Tokyo 194-8543, Japan
| | - U Tamponi
- INFN Sezione di Torino, I-10125 Torino, Italy
| | - S Tanaka
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - K Tanida
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195, Japan
| | - H Tanigawa
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - N Taniguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - F Tenchini
- INFN Sezione di Pisa, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| | - R Tiwary
- Tata Institute of Fundamental Research, Mumbai 400005, India
| | - D Tonelli
- INFN Sezione di Trieste, I-34127 Trieste, Italy
| | - E Torassa
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - N Toutounji
- School of Physics, University of Sydney, New South Wales 2006, Australia
| | - K Trabelsi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - T Tsuboyama
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - I Ueda
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - S Uehara
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - Y Uematsu
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - T Uglov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Moscow 101000, Russian Federation
| | - K Unger
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany
| | - Y Unno
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763, South Korea
| | - K Uno
- Niigata University, Niigata 950-2181, Japan
| | - S Uno
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - P Urquijo
- School of Physics, University of Melbourne, Victoria 3010, Australia
| | - Y Ushiroda
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y V Usov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - S E Vahsen
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | | | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - A Vinokurova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - L Vitale
- INFN Sezione di Trieste, I-34127 Trieste, Italy
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
| | - A Vossen
- Duke University, Durham, North Carolina 27708, USA
| | - E Waheed
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - H M Wakeling
- McGill University, Montréal, Québec, H3A 2T8, Canada
| | - E Wang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - M-Z Wang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - X L Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443, China
| | - A Warburton
- McGill University, Montréal, Québec, H3A 2T8, Canada
| | - M Watanabe
- Niigata University, Niigata 950-2181, Japan
| | - M Welsch
- University of Bonn, 53115 Bonn, Germany
| | - C Wessel
- University of Bonn, 53115 Bonn, Germany
| | - J Wiechczynski
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342, Poland
| | - E Won
- Korea University, Seoul 02841, South Korea
| | - X P Xu
- Soochow University, Suzhou 215006, China
| | - B D Yabsley
- School of Physics, University of Sydney, New South Wales 2006, Australia
| | - S Yamada
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - W Yan
- University of Science and Technology of China, Hefei 230026, China
| | - S B Yang
- Korea University, Seoul 02841, South Korea
| | - H Ye
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - J Yelton
- University of Florida, Gainesville, Florida 32611, USA
| | - J H Yin
- Korea University, Seoul 02841, South Korea
| | - K Yoshihara
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Y Yusa
- Niigata University, Niigata 950-2181, Japan
| | - L Zani
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille, France
| | - V Zhilich
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation
- Novosibirsk State University, Novosibirsk 630090, Russian Federation
| | - Q D Zhou
- Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Institute for Advanced Research, Nagoya University, Nagoya 464-8602, Japan
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602, Japan
| | - X Y Zhou
- Liaoning Normal University, Dalian 116029, China
| | - V I Zhukova
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - R Žlebčík
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
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Abudinén F, Adachi I, Adamczyk K, Ahlburg P, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Baur A, Babu V, Baehr S, Bambade P, Banerjee S, Bansal S, Baudot J, Becker J, Behera PK, Bennett JV, Bernieri E, Bernlochner FU, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bianchi F, Bilka T, Biswas D, Bozek A, Bračko M, Branchini P, Braun N, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Červenkov D, Chang P, Cheaib R, Chekelian V, Chen C, Chen YT, Cheon BG, Chilikin K, Chirapatpimol K, Cho K, Cho SJ, Choudhury S, Cinabro D, Corona L, Cremaldi LM, Cunliffe S, Czank T, Dattola F, De La Cruz-Burelo E, de Marino G, De Nardo G, De Nuccio M, De Pietro G, de Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Di Canto A, Di Capua F, Dingfelder J, Doležal Z, Domínguez Jiménez I, Dong TV, Dort K, Dubey S, Duell S, Dujany G, Eidelman S, Eliachevitch M, Epifanov D, Ferber T, Ferlewicz D, Fillinger T, Finocchiaro G, Fiore S, Fodor A, Forti F, Frey A, Fulsom BG, Gabyshev N, Ganiev E, Garcia-Hernandez M, Garmash A, Gaur V, Gaz A, Gellrich A, Giordano R, Giri A, Glazov A, Gobbo B, Godang R, Goldenzweig P, Golob B, Grace P, Gradl W, Graziani E, Greenwald D, Guan Y, Gudkova K, Hadjivasiliou C, Halder S, Hara K, Hartbrich O, Hayasaka K, Hayashii H, Hazra S, Hearty C, Heredia de la Cruz I, Hernández Villanueva M, Hershenhorn A, Higuchi T, Hill EC, Hirata H, Hoek M, Hohmann M, Hsu CL, Humair T, Iijima T, Inami K, Inguglia G, Irakkathil Jabbar J, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jackson P, Jacobs WW, Jaffe DE, Jin Y, Joo C, Junkerkalefeld H, Kaliyar AB, Kandra J, Kang KH, Karl R, Karyan G, Kawasaki T, Ketter C, Kichimi H, Kiesling C, Kim CH, Kim DY, Kim YK, Kimmel TD, Kodyš P, Koga T, Kohani S, Konno T, Korobov A, Korpar S, Kovalenko E, Kraetzschmar TMG, Krinner F, Križan P, Krokovny P, Kuhr T, Kumar J, Kumar M, Kumar R, Kumara K, Kunigo T, Kurz S, Kuzmin A, Kwon YJ, Lacaprara S, Lai YT, La Licata C, Lanceri L, Lange JS, Laurenza M, Lautenbach K, Le Diberder FR, Lee SC, Leitl P, Levit D, Lewis PM, Li C, Li LK, Li SX, Li YB, Libby J, Lieret K, Liptak Z, Liu QY, Liventsev D, Longo S, Lozar A, Lueck T, Lyu C, Maggiora M, Maity S, Manfredi R, Manoni E, Marcello S, Marinas C, Martini A, Masuda M, Matsuda T, Matsuoka K, Matvienko D, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Miyake H, Mizuk R, Mohanty GB, Moser HG, Mrvar M, Müller FJ, Murphy C, Mussa R, Nakamura KR, Nakao M, Natkaniec Z, Natochii A, Nayak M, Nazaryan G, Niebuhr C, Nisar NK, Nishida S, Nishimura K, Ogawa S, Onishchuk Y, Ono H, Onuki Y, Oskin P, Ozaki H, Pakhlov P, Pakhlova G, Paladino A, Pang T, Panta A, Paoloni E, Pardi S, Park H, Park SH, Paschen B, Passeri A, Pathak A, Patra S, Paul S, Pedlar TK, Peruzzi I, Pestotnik R, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Podobnik T, Pokharel S, Polat G, Popov V, Praz C, Prell S, Prencipe E, Prim MT, Rad N, Rados P, Raiz S, Remnev M, Ripp-Baudot I, Ritter M, Rizzo G, Rizzuto LB, Robertson SH, Rodríguez Pérez D, Roney JM, Rostomyan A, Rout N, Russo G, Sahoo D, Sanders DA, Sandilya S, Sangal A, Santelj L, Sato Y, Savinov V, Scavino B, Schueler J, Schwanda C, Schwartz AJ, Seddon RM, Seino Y, Selce A, Senyo K, Serrano J, Sevior ME, Sfienti C, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sobie RJ, Soffer A, Sokolov A, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Sumihama M, Sumisawa K, Summers DJ, Sutcliffe W, Suzuki SY, Svidras H, Tabata M, Takahashi M, Takizawa M, Tamponi U, Tanaka S, Tanida K, Tanigawa H, Taniguchi N, Taras P, Tenchini F, Tonelli D, Torassa E, Toutounji N, Trabelsi K, Uchida M, Unno Y, Uno K, Uno S, Urquijo P, Ushiroda Y, Usov YV, Vahsen SE, van Tonder R, Varner GS, Varvell KE, Vinokurova A, Vitale L, Wach B, Waheed E, Wakeling HM, Wan Abdullah W, Wang MZ, Wang XL, Warburton A, Watanuki S, Webb J, Welsch M, Wessel C, Wiechczynski J, Windel H, Xu XP, Yabsley BD, Yamada S, Yan W, Yang SB, Ye H, Yelton J, Yin JH, Yook YM, Yoshihara K, Yuan CZ, Yusa Y, Zani L, Zhilich V, Zhou QD, Zhou XY, Zhukova VI. Search for B^{+}→K^{+}νν[over ¯] Decays Using an Inclusive Tagging Method at Belle II. Phys Rev Lett 2021; 127:181802. [PMID: 34767404 DOI: 10.1103/physrevlett.127.181802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/23/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} collected at the ϒ(4S) resonance and a sample of 9 fb^{-1} collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B^{+}→K^{+}νν[over ¯] decay, but also the inclusive properties of the other B meson in the ϒ(4S)→BB[over ¯] event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B^{+}→K^{+}νν[over ¯] of 4.1×10^{-5} is set at the 90% confidence level.
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Affiliation(s)
- F Abudinén
- INFN Sezione di Trieste, I-34127 Trieste
| | - I Adachi
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Adamczyk
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | | | - H Aihara
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - N Akopov
- Alikhanyan National Science Laboratory, Yerevan 0036
| | - A Aloisio
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | - N Anh Ky
- Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000
- Institute of Physics, Vietnam Academy of Science and Technology (VAST), Hanoi
| | - D M Asner
- Brookhaven National Laboratory, Upton, New York 11973
| | - H Atmacan
- University of Cincinnati, Cincinnati, Ohio 45221
| | - T Aushev
- National Research University Higher School of Economics, Moscow 101000
| | - V Aushev
- Taras Shevchenko National University of Kiev, Kiev
| | - A Baur
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - V Babu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - S Baehr
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - P Bambade
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - Sw Banerjee
- University of Louisville, Louisville, Kentucky 40292
| | - S Bansal
- Panjab University, Chandigarh 160014
| | - J Baudot
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg
| | - J Becker
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - P K Behera
- Indian Institute of Technology Madras, Chennai 600036
| | - J V Bennett
- University of Mississippi, University, Mississippi 38677
| | | | | | - M Bertemes
- Institute of High Energy Physics, Vienna 1050
| | - E Bertholet
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978
| | - M Bessner
- University of Hawaii, Honolulu, Hawaii 96822
| | - S Bettarini
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - F Bianchi
- INFN Sezione di Torino, I-10125 Torino
- Dipartimento di Fisica, Università di Torino, I-10125 Torino
| | - T Bilka
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - D Biswas
- University of Louisville, Louisville, Kentucky 40292
| | - A Bozek
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - M Bračko
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | | | - N Braun
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - T E Browder
- University of Hawaii, Honolulu, Hawaii 96822
| | - A Budano
- INFN Sezione di Roma Tre, I-00146 Roma
| | - S Bussino
- INFN Sezione di Roma Tre, I-00146 Roma
- Dipartimento di Matematica e Fisica, Università di Roma Tre, I-00146 Roma
| | - M Campajola
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | - L Cao
- University of Bonn, 53115 Bonn
| | - G Casarosa
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - C Cecchi
- INFN Sezione di Perugia, I-06123 Perugia
- Dipartimento di Fisica, Università di Perugia, I-06123 Perugia
| | - D Červenkov
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - P Chang
- Department of Physics, National Taiwan University, Taipei 10617
| | - R Cheaib
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - V Chekelian
- Max-Planck-Institut für Physik, 80805 München
| | - C Chen
- Iowa State University, Ames, Iowa 50011
| | - Y-T Chen
- Department of Physics, National Taiwan University, Taipei 10617
| | - B G Cheon
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Chilikin
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | | | - K Cho
- Korea Institute of Science and Technology Information, Daejeon 34141
| | - S-J Cho
- Yonsei University, Seoul 03722
| | - S Choudhury
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - D Cinabro
- Wayne State University, Detroit, Michigan 48202
| | - L Corona
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - L M Cremaldi
- University of Mississippi, University, Mississippi 38677
| | - S Cunliffe
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - T Czank
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - F Dattola
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - E De La Cruz-Burelo
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360
| | - G de Marino
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - G De Nardo
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | - M De Nuccio
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | | | - R de Sangro
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati
| | - M Destefanis
- INFN Sezione di Torino, I-10125 Torino
- Dipartimento di Fisica, Università di Torino, I-10125 Torino
| | - S Dey
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978
| | - A De Yta-Hernandez
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360
| | - A Di Canto
- Brookhaven National Laboratory, Upton, New York 11973
| | - F Di Capua
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | | | - Z Doležal
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | | | - T V Dong
- Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000
| | - K Dort
- Justus-Liebig-Universität Gießen, 35392 Gießen
| | - S Dubey
- University of Hawaii, Honolulu, Hawaii 96822
| | - S Duell
- University of Bonn, 53115 Bonn
| | - G Dujany
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg
| | - S Eidelman
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | | | - D Epifanov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Ferber
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - D Ferlewicz
- School of Physics, University of Melbourne, Victoria 3010
| | - T Fillinger
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg
| | - G Finocchiaro
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati
| | - S Fiore
- INFN Sezione di Roma, I-00185 Roma
| | - A Fodor
- McGill University, Montréal, Québec, H3A 2T8
| | - F Forti
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - A Frey
- II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen
| | - B G Fulsom
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - N Gabyshev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - E Ganiev
- INFN Sezione di Trieste, I-34127 Trieste
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste
| | - M Garcia-Hernandez
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360
| | - A Garmash
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - V Gaur
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - A Gaz
- INFN Sezione di Padova, I-35131 Padova
- Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova
| | - A Gellrich
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - R Giordano
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | - A Giri
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - A Glazov
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - B Gobbo
- INFN Sezione di Trieste, I-34127 Trieste
| | - R Godang
- University of South Alabama, Mobile, Alabama 36688
| | - P Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - B Golob
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - P Grace
- Department of Physics, University of Adelaide, Adelaide, South Australia 5005
| | - W Gradl
- Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz
| | | | - D Greenwald
- Department of Physics, Technische Universität München, 85748 Garching
| | - Y Guan
- University of Cincinnati, Cincinnati, Ohio 45221
| | - K Gudkova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - C Hadjivasiliou
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - S Halder
- Tata Institute of Fundamental Research, Mumbai 400005
| | - K Hara
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - O Hartbrich
- University of Hawaii, Honolulu, Hawaii 96822
| | | | | | - S Hazra
- Tata Institute of Fundamental Research, Mumbai 400005
| | - C Hearty
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1
| | - I Heredia de la Cruz
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City 07360
- Consejo Nacional de Ciencia y Tecnología, Mexico City 03940
| | | | - A Hershenhorn
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1
| | - T Higuchi
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - E C Hill
- University of British Columbia, Vancouver, British Columbia, V6T 1Z1
| | - H Hirata
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - M Hoek
- Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz
| | - M Hohmann
- School of Physics, University of Melbourne, Victoria 3010
| | - C-L Hsu
- School of Physics, University of Sydney, New South Wales 2006
| | - T Humair
- Max-Planck-Institut für Physik, 80805 München
| | - T Iijima
- Graduate School of Science, Nagoya University, Nagoya 464-8602
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602
| | - K Inami
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - G Inguglia
- Institute of High Energy Physics, Vienna 1050
| | - J Irakkathil Jabbar
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - A Ishikawa
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - R Itoh
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Iwasaki
- Osaka City University, Osaka 558-8585
| | - Y Iwasaki
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Jackson
- Department of Physics, University of Adelaide, Adelaide, South Australia 5005
| | - W W Jacobs
- Indiana University, Bloomington, Indiana 47408
| | - D E Jaffe
- Brookhaven National Laboratory, Upton, New York 11973
| | - Y Jin
- INFN Sezione di Trieste, I-34127 Trieste
| | - C Joo
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | | | - A B Kaliyar
- Tata Institute of Fundamental Research, Mumbai 400005
| | - J Kandra
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - K H Kang
- Kyungpook National University, Daegu 41566
| | - R Karl
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - G Karyan
- Alikhanyan National Science Laboratory, Yerevan 0036
| | - T Kawasaki
- Kitasato University, Sagamihara 252-0373
| | - C Ketter
- University of Hawaii, Honolulu, Hawaii 96822
| | - H Kichimi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - C Kiesling
- Max-Planck-Institut für Physik, 80805 München
| | - C-H Kim
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - D Y Kim
- Soongsil University, Seoul 06978
| | - Y-K Kim
- Yonsei University, Seoul 03722
| | - T D Kimmel
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - P Kodyš
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - T Koga
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - S Kohani
- University of Hawaii, Honolulu, Hawaii 96822
| | - T Konno
- Kitasato University, Sagamihara 252-0373
| | - A Korobov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - S Korpar
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor
| | - E Kovalenko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | | | - F Krinner
- Max-Planck-Institut für Physik, 80805 München
| | - P Križan
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - P Krokovny
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Kuhr
- Ludwig Maximilians University, 80539 Munich
| | - J Kumar
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - M Kumar
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - R Kumar
- Punjab Agricultural University, Ludhiana 141004
| | - K Kumara
- Wayne State University, Detroit, Michigan 48202
| | - T Kunigo
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - S Kurz
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - A Kuzmin
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | | | | | - Y-T Lai
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - C La Licata
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - L Lanceri
- INFN Sezione di Trieste, I-34127 Trieste
| | - J S Lange
- Justus-Liebig-Universität Gießen, 35392 Gießen
| | - M Laurenza
- INFN Sezione di Roma Tre, I-00146 Roma
- Dipartimento di Matematica e Fisica, Università di Roma Tre, I-00146 Roma
| | - K Lautenbach
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille
| | | | - S C Lee
- Kyungpook National University, Daegu 41566
| | - P Leitl
- Max-Planck-Institut für Physik, 80805 München
| | - D Levit
- Department of Physics, Technische Universität München, 85748 Garching
| | | | - C Li
- Liaoning Normal University, Dalian 116029
| | - L K Li
- University of Cincinnati, Cincinnati, Ohio 45221
| | - S X Li
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - Y B Li
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - J Libby
- Indian Institute of Technology Madras, Chennai 600036
| | - K Lieret
- Ludwig Maximilians University, 80539 Munich
| | - Z Liptak
- Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530
| | - Q Y Liu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - D Liventsev
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Wayne State University, Detroit, Michigan 48202
| | - S Longo
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - A Lozar
- J. Stefan Institute, 1000 Ljubljana
| | - T Lueck
- Ludwig Maximilians University, 80539 Munich
| | - C Lyu
- University of Bonn, 53115 Bonn
| | - M Maggiora
- INFN Sezione di Torino, I-10125 Torino
- Dipartimento di Fisica, Università di Torino, I-10125 Torino
| | - S Maity
- Indian Institute of Technology Bhubaneswar, Satya Nagar 751007
| | - R Manfredi
- INFN Sezione di Trieste, I-34127 Trieste
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste
| | - E Manoni
- INFN Sezione di Perugia, I-06123 Perugia
| | - S Marcello
- INFN Sezione di Torino, I-10125 Torino
- Dipartimento di Fisica, Università di Torino, I-10125 Torino
| | - C Marinas
- Instituto de Fisica Corpuscular, Paterna 46980
| | - A Martini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
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- Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192
| | - K Matsuoka
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - D Matvienko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | - F Meier
- Duke University, Durham, North Carolina 27708
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- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
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- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - M Milesi
- School of Physics, University of Melbourne, Victoria 3010
| | - C Miller
- University of Victoria, Victoria, British Columbia, V8W 3P6
| | | | - H Miyake
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - R Mizuk
- National Research University Higher School of Economics, Moscow 101000
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - G B Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
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- Max-Planck-Institut für Physik, 80805 München
| | - M Mrvar
- Institute of High Energy Physics, Vienna 1050
| | - F J Müller
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - C Murphy
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - R Mussa
- INFN Sezione di Torino, I-10125 Torino
| | - K R Nakamura
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Nakao
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - Z Natkaniec
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - A Natochii
- University of Hawaii, Honolulu, Hawaii 96822
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- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978
| | - G Nazaryan
- Alikhanyan National Science Laboratory, Yerevan 0036
| | - C Niebuhr
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - N K Nisar
- Brookhaven National Laboratory, Upton, New York 11973
| | - S Nishida
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Nishimura
- University of Hawaii, Honolulu, Hawaii 96822
| | - S Ogawa
- Toho University, Funabashi 274-8510
| | - Y Onishchuk
- Taras Shevchenko National University of Kiev, Kiev
| | - H Ono
- Niigata University, Niigata 950-2181
| | - Y Onuki
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - P Oskin
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - H Ozaki
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Pakhlov
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Moscow Physical Engineering Institute, Moscow 115409
| | - G Pakhlova
- National Research University Higher School of Economics, Moscow 101000
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - A Paladino
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - T Pang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - A Panta
- University of Mississippi, University, Mississippi 38677
| | - E Paoloni
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | - S Pardi
- INFN Sezione di Napoli, I-80126 Napoli
| | - H Park
- Kyungpook National University, Daegu 41566
| | - S-H Park
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | | | - A Passeri
- INFN Sezione di Roma Tre, I-00146 Roma
| | - A Pathak
- University of Louisville, Louisville, Kentucky 40292
| | - S Patra
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - S Paul
- Department of Physics, Technische Universität München, 85748 Garching
| | | | - I Peruzzi
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati
| | | | - M Piccolo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati
| | - L E Piilonen
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
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- University of Mississippi, University, Mississippi 38677
| | - G Polat
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille
| | - V Popov
- National Research University Higher School of Economics, Moscow 101000
| | - C Praz
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - S Prell
- Iowa State University, Ames, Iowa 50011
| | | | | | - N Rad
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - P Rados
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - S Raiz
- INFN Sezione di Trieste, I-34127 Trieste
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste
| | - M Remnev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - I Ripp-Baudot
- Université de Strasbourg, CNRS, IPHC, UMR 7178, 67037 Strasbourg
| | - M Ritter
- Ludwig Maximilians University, 80539 Munich
| | - G Rizzo
- INFN Sezione di Pisa, I-56127 Pisa
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa
| | | | - S H Robertson
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2
- McGill University, Montréal, Québec, H3A 2T8
| | | | - J M Roney
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2
- University of Victoria, Victoria, British Columbia, V8W 3P6
| | - A Rostomyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - N Rout
- Indian Institute of Technology Madras, Chennai 600036
| | - G Russo
- INFN Sezione di Napoli, I-80126 Napoli
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli
| | - D Sahoo
- Tata Institute of Fundamental Research, Mumbai 400005
| | - D A Sanders
- University of Mississippi, University, Mississippi 38677
| | - S Sandilya
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - A Sangal
- University of Cincinnati, Cincinnati, Ohio 45221
| | - L Santelj
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - Y Sato
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - V Savinov
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - B Scavino
- Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz
| | - J Schueler
- University of Hawaii, Honolulu, Hawaii 96822
| | - C Schwanda
- Institute of High Energy Physics, Vienna 1050
| | - A J Schwartz
- University of Cincinnati, Cincinnati, Ohio 45221
| | - R M Seddon
- McGill University, Montréal, Québec, H3A 2T8
| | - Y Seino
- Niigata University, Niigata 950-2181
| | - A Selce
- ENEA Casaccia, I-00123 Roma
- INFN Sezione di Roma Tre, I-00146 Roma
| | - K Senyo
- Yamagata University, Yamagata 990-8560
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- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille
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- School of Physics, University of Melbourne, Victoria 3010
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- Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz
| | - J-G Shiu
- Department of Physics, National Taiwan University, Taipei 10617
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- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Sibidanov
- University of Hawaii, Honolulu, Hawaii 96822
| | - F Simon
- Max-Planck-Institut für Physik, 80805 München
| | - R J Sobie
- Institute of Particle Physics (Canada), Victoria, British Columbia V8W 2Y2
- University of Victoria, Victoria, British Columbia, V8W 3P6
| | - A Soffer
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978
| | - A Sokolov
- Institute for High Energy Physics, Protvino 142281
| | - E Solovieva
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - S Spataro
- INFN Sezione di Torino, I-10125 Torino
- Dipartimento di Fisica, Università di Torino, I-10125 Torino
| | - B Spruck
- Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz
| | - M Starič
- J. Stefan Institute, 1000 Ljubljana
| | - S Stefkova
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - Z S Stottler
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - R Stroili
- INFN Sezione di Padova, I-35131 Padova
- Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova
| | - M Sumihama
- Gifu University, Gifu 501-1193
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
| | - K Sumisawa
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - D J Summers
- University of Mississippi, University, Mississippi 38677
| | | | - S Y Suzuki
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - H Svidras
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - M Tabata
- Chiba University, Chiba 263-8522
| | - M Takahashi
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - M Takizawa
- J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Meson Science Laboratory, Cluster for Pioneering Research, RIKEN, Saitama 351-0198
- Showa Pharmaceutical University, Tokyo 194-8543
| | - U Tamponi
- INFN Sezione di Torino, I-10125 Torino
| | - S Tanaka
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Tanida
- Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195
| | - H Tanigawa
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - N Taniguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Taras
- Université de Montréal, Physique des Particules, Montréal, Québec, H3C 3J7
| | - F Tenchini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - D Tonelli
- INFN Sezione di Trieste, I-34127 Trieste
| | - E Torassa
- INFN Sezione di Padova, I-35131 Padova
| | - N Toutounji
- School of Physics, University of Sydney, New South Wales 2006
| | - K Trabelsi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - M Uchida
- Tokyo Institute of Technology, Tokyo 152-8550
| | - Y Unno
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Uno
- Niigata University, Niigata 950-2181
| | - S Uno
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Urquijo
- School of Physics, University of Melbourne, Victoria 3010
| | - Y Ushiroda
- The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - Y V Usov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - S E Vahsen
- University of Hawaii, Honolulu, Hawaii 96822
| | | | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822
| | - K E Varvell
- School of Physics, University of Sydney, New South Wales 2006
| | - A Vinokurova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - L Vitale
- INFN Sezione di Trieste, I-34127 Trieste
- Dipartimento di Fisica, Università di Trieste, I-34127 Trieste
| | - B Wach
- Max-Planck-Institut für Physik, 80805 München
| | - E Waheed
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | | | - W Wan Abdullah
- National Centre for Particle Physics, University Malaya, 50603 Kuala Lumpur
| | - M-Z Wang
- Department of Physics, National Taiwan University, Taipei 10617
| | - X L Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - A Warburton
- McGill University, Montréal, Québec, H3A 2T8
| | - S Watanuki
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay
| | - J Webb
- School of Physics, University of Melbourne, Victoria 3010
| | | | | | | | - H Windel
- Max-Planck-Institut für Physik, 80805 München
| | - X P Xu
- Soochow University, Suzhou 215006
| | - B D Yabsley
- School of Physics, University of Sydney, New South Wales 2006
| | - S Yamada
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - W Yan
- University of Science and Technology of China, Hefei 230026
| | | | - H Ye
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - J Yelton
- University of Florida, Gainesville, Florida 32611
| | - J H Yin
- Korea University, Seoul 02841
| | - Y M Yook
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
| | - K Yoshihara
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - C Z Yuan
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
| | - Y Yusa
- Niigata University, Niigata 950-2181
| | - L Zani
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille
| | - V Zhilich
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - Q D Zhou
- Graduate School of Science, Nagoya University, Nagoya 464-8602
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602
- Institute for Advanced Research, Nagoya University, Nagoya 464-8602
| | - X Y Zhou
- Liaoning Normal University, Dalian 116029
| | - V I Zhukova
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
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Teramoto Y, Uehara S, Masuda M, Adachi I, Aihara H, Al Said S, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Behera P, Beleño C, Bennett J, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bonvicini G, Bozek A, Bračko M, Browder TE, Campajola M, Červenkov D, Chang MC, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Cho SJ, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, De Nardo G, Di Capua F, Doležal Z, Dong TV, Eidelman S, Ferber T, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Giri A, Goldenzweig P, Greenwald D, Hadjivasiliou C, Hara T, Hartbrich O, Hayasaka K, Hayashii H, Hedges MT, Hernandez Villanueva M, Hou WS, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jang EJ, Jia S, Jin Y, Joo CW, Joo KK, Kahn J, Kaliyar AB, Kang KH, Karyan G, Kato Y, Kawasaki T, Kichimi H, Kiesling C, Kim BH, Kim DY, Kim SH, Kim YK, Kimmel TD, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lalwani K, Lange JS, Lee IS, Lee SC, Lewis P, Li LK, Li YB, Li Gioi L, Libby J, Lieret K, Liptak Z, Liventsev D, Luo T, MacQueen C, Matsuda T, Matvienko D, Merola M, Miyabayashi K, Miyata H, Mohanty GB, Mohanty S, Moon TJ, Mori T, Mrvar M, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Natochii A, Nayak M, Nisar NK, Nishida S, Ogawa K, Ogawa S, Ono H, Onuki Y, Pakhlov P, Pakhlova G, Pardi S, Park H, Park SH, Patra S, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Popov V, Prencipe E, Prim MT, Ritter M, Rostomyan A, Rout N, Russo G, Sahoo D, Sakai Y, Sandilya S, Sangal A, Santelj L, Sanuki T, Savinov V, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shiu JG, Singh JB, Solovieva E, Starič M, Stottler ZS, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Van Tonder R, Varner G, Vinokurova A, Vorobyev V, Waheed E, Wang CH, Wang E, Wang MZ, Wang P, Wang XL, Watanabe M, Won E, Xu X, Yabsley BD, Yang SB, Ye H, Yelton J, Yin JH, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V. Evidence for X(3872)→J/ψπ^{+}π^{-} Produced in Single-Tag Two-Photon Interactions. Phys Rev Lett 2021; 126:122001. [PMID: 33834793 DOI: 10.1103/physrevlett.126.122001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 12/14/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e^{+}e^{-}→e^{+}e^{-}J/ψπ^{+}π^{-}, using 825 fb^{-1} of data collected by the Belle detector operated at the KEKB e^{+}e^{-} collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for Γ[over ˜]_{γγ}B(X(3872)→J/ψπ^{+}π^{-}) assuming the Q^{2} dependence predicted by a cc[over ¯] meson model, where -Q^{2} is the invariant mass squared of the virtual photon. No X(3915)→J/ψπ^{+}π^{-} candidates are found.
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Affiliation(s)
| | - S Uehara
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Masuda
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047
- Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
| | - I Adachi
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - H Aihara
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - S Al Said
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
| | - D M Asner
- Brookhaven National Laboratory, Upton, New York 11973
| | - H Atmacan
- University of Cincinnati, Cincinnati, Ohio 45221
| | - T Aushev
- Higher School of Economics (HSE), Moscow 101000
| | - R Ayad
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
| | - V Babu
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - P Behera
- Indian Institute of Technology Madras, Chennai 600036
| | - C Beleño
- II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen
| | - J Bennett
- University of Mississippi, University, Mississippi 38677
| | - V Bhardwaj
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - B Bhuyan
- Indian Institute of Technology Guwahati, Assam 781039
| | - T Bilka
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - J Biswal
- J. Stefan Institute, 1000 Ljubljana
| | - G Bonvicini
- Wayne State University, Detroit, Michigan 48202
| | - A Bozek
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - M Bračko
- J. Stefan Institute, 1000 Ljubljana
- University of Maribor, 2000 Maribor
| | - T E Browder
- University of Hawaii, Honolulu, Hawaii 96822
| | - M Campajola
- INFN-Sezione di Napoli, 80126 Napoli
- Università di Napoli Federico II, 80126 Napoli
| | - D Červenkov
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - M-C Chang
- Department of Physics, Fu Jen Catholic University, Taipei 24205
| | - P Chang
- Department of Physics, National Taiwan University, Taipei 10617
| | - V Chekelian
- Max-Planck-Institut für Physik, 80805 München
| | - A Chen
- National Central University, Chung-li 32054
| | - B G Cheon
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - K Chilikin
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - K Cho
- Korea Institute of Science and Technology Information, Daejeon 34141
| | - S-J Cho
- Yonsei University, Seoul 03722
| | - S-K Choi
- Gyeongsang National University, Jinju 52828
| | - Y Choi
- Sungkyunkwan University, Suwon 16419
| | - S Choudhury
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - D Cinabro
- Wayne State University, Detroit, Michigan 48202
| | - S Cunliffe
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - G De Nardo
- INFN-Sezione di Napoli, 80126 Napoli
- Università di Napoli Federico II, 80126 Napoli
| | - F Di Capua
- INFN-Sezione di Napoli, 80126 Napoli
- Università di Napoli Federico II, 80126 Napoli
| | - Z Doležal
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - T V Dong
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - S Eidelman
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | - T Ferber
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - B G Fulsom
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R Garg
- Panjab University, Chandigarh 160014
| | - V Gaur
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - N Gabyshev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Garmash
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - A Giri
- Indian Institute of Technology Hyderabad, Telangana 502285
| | - P Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - D Greenwald
- Department of Physics, Technische Universität München, 85748 Garching
| | - C Hadjivasiliou
- Pacific Northwest National Laboratory, Richland, Washington 99352
| | - T Hara
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - O Hartbrich
- University of Hawaii, Honolulu, Hawaii 96822
| | | | | | - M T Hedges
- University of Hawaii, Honolulu, Hawaii 96822
| | | | - W-S Hou
- Department of Physics, National Taiwan University, Taipei 10617
| | - C-L Hsu
- School of Physics, University of Sydney, New South Wales 2006
| | - T Iijima
- Graduate School of Science, Nagoya University, Nagoya 464-8602
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602
| | - K Inami
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - G Inguglia
- Institute of High Energy Physics, Vienna 1050
| | - A Ishikawa
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - R Itoh
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - M Iwasaki
- Osaka City University, Osaka 558-8585
| | - Y Iwasaki
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - W W Jacobs
- Indiana University, Bloomington, Indiana 47408
| | - E-J Jang
- Gyeongsang National University, Jinju 52828
| | - S Jia
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - Y Jin
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - C W Joo
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583
| | - K K Joo
- Chonnam National University, Gwangju 61186
| | - J Kahn
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - A B Kaliyar
- Tata Institute of Fundamental Research, Mumbai 400005
| | - K H Kang
- Kyungpook National University, Daegu 41566
| | - G Karyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - Y Kato
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - T Kawasaki
- Kitasato University, Sagamihara 252-0373
| | - H Kichimi
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - C Kiesling
- Max-Planck-Institut für Physik, 80805 München
| | - B H Kim
- Seoul National University, Seoul 08826
| | - D Y Kim
- Soongsil University, Seoul 06978
| | - S H Kim
- Seoul National University, Seoul 08826
| | - Y-K Kim
- Yonsei University, Seoul 03722
| | - T D Kimmel
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - K Kinoshita
- University of Cincinnati, Cincinnati, Ohio 45221
| | - P Kodyš
- Faculty of Mathematics and Physics, Charles University, 121 16 Prague
| | - S Korpar
- J. Stefan Institute, 1000 Ljubljana
- University of Maribor, 2000 Maribor
| | | | - P Križan
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - R Kroeger
- University of Mississippi, University, Mississippi 38677
| | - P Krokovny
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - T Kuhr
- Ludwig Maximilians University, 80539 Munich
| | - R Kulasiri
- Kennesaw State University, Kennesaw, Georgia 30144
| | - R Kumar
- Punjab Agricultural University, Ludhiana 141004
| | - K Kumara
- Wayne State University, Detroit, Michigan 48202
| | - A Kuzmin
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | | | - K Lalwani
- Malaviya National Institute of Technology Jaipur, Jaipur 302017
| | - J S Lange
- Justus-Liebig-Universität Gießen, 35392 Gießen
| | - I S Lee
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - S C Lee
- Kyungpook National University, Daegu 41566
| | - P Lewis
- University of Bonn, 53115 Bonn
| | - L K Li
- University of Cincinnati, Cincinnati, Ohio 45221
| | - Y B Li
- Peking University, Beijing 100871
| | - L Li Gioi
- Max-Planck-Institut für Physik, 80805 München
| | - J Libby
- Indian Institute of Technology Madras, Chennai 600036
| | - K Lieret
- Ludwig Maximilians University, 80539 Munich
| | - Z Liptak
- Hiroshima University, Hiroshima 739-8511
| | - D Liventsev
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Wayne State University, Detroit, Michigan 48202
| | - T Luo
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | - C MacQueen
- School of Physics, University of Melbourne, Victoria 3010
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192
| | - D Matvienko
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | - M Merola
- INFN-Sezione di Napoli, 80126 Napoli
- Università di Napoli Federico II, 80126 Napoli
| | | | - H Miyata
- Niigata University, Niigata 950-2181
| | - G B Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
| | - S Mohanty
- Tata Institute of Fundamental Research, Mumbai 400005
- Utkal University, Bhubaneswar 751004
| | - T J Moon
- Seoul National University, Seoul 08826
| | - T Mori
- Graduate School of Science, Nagoya University, Nagoya 464-8602
| | - M Mrvar
- Institute of High Energy Physics, Vienna 1050
| | - R Mussa
- INFN-Sezione di Torino, 10125 Torino
| | - E Nakano
- Osaka City University, Osaka 558-8585
| | - M Nakao
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - H Nakazawa
- Department of Physics, National Taiwan University, Taipei 10617
| | - Z Natkaniec
- H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
| | - A Natochii
- University of Hawaii, Honolulu, Hawaii 96822
| | - M Nayak
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978
| | - N K Nisar
- Brookhaven National Laboratory, Upton, New York 11973
| | - S Nishida
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - K Ogawa
- Niigata University, Niigata 950-2181
| | - S Ogawa
- Toho University, Funabashi 274-8510
| | - H Ono
- Nippon Dental University, Niigata 951-8580
- Niigata University, Niigata 950-2181
| | - Y Onuki
- Department of Physics, University of Tokyo, Tokyo 113-0033
| | - P Pakhlov
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Moscow Physical Engineering Institute, Moscow 115409
| | - G Pakhlova
- Higher School of Economics (HSE), Moscow 101000
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - S Pardi
- INFN-Sezione di Napoli, 80126 Napoli
| | - H Park
- Kyungpook National University, Daegu 41566
| | | | - S Patra
- Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306
| | - S Paul
- Max-Planck-Institut für Physik, 80805 München
- Department of Physics, Technische Universität München, 85748 Garching
| | | | | | - L E Piilonen
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - T Podobnik
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - V Popov
- Higher School of Economics (HSE), Moscow 101000
| | | | - M T Prim
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
| | - M Ritter
- Ludwig Maximilians University, 80539 Munich
| | - A Rostomyan
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - N Rout
- Indian Institute of Technology Madras, Chennai 600036
| | - G Russo
- Università di Napoli Federico II, 80126 Napoli
| | - D Sahoo
- Tata Institute of Fundamental Research, Mumbai 400005
| | - Y Sakai
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - S Sandilya
- University of Cincinnati, Cincinnati, Ohio 45221
| | - A Sangal
- University of Cincinnati, Cincinnati, Ohio 45221
| | - L Santelj
- J. Stefan Institute, 1000 Ljubljana
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
| | - T Sanuki
- Department of Physics, Tohoku University, Sendai 980-8578
| | - V Savinov
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - G Schnell
- University of the Basque Country UPV/EHU, 48080 Bilbao
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao
| | - J Schueler
- University of Hawaii, Honolulu, Hawaii 96822
| | - C Schwanda
- Institute of High Energy Physics, Vienna 1050
| | - Y Seino
- Niigata University, Niigata 950-2181
| | - K Senyo
- Yamagata University, Yamagata 990-8560
| | - M E Sevior
- School of Physics, University of Melbourne, Victoria 3010
| | - M Shapkin
- Institute for High Energy Physics, Protvino 142281
| | - V Shebalin
- University of Hawaii, Honolulu, Hawaii 96822
| | - J-G Shiu
- Department of Physics, National Taiwan University, Taipei 10617
| | - J B Singh
- Panjab University, Chandigarh 160014
| | - E Solovieva
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - M Starič
- J. Stefan Institute, 1000 Ljubljana
| | - Z S Stottler
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | | | - K Sumisawa
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - T Sumiyoshi
- Tokyo Metropolitan University, Tokyo 192-0397
| | | | - M Takizawa
- J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
- Showa Pharmaceutical University, Tokyo 194-8543
| | - U Tamponi
- INFN-Sezione di Torino, 10125 Torino
| | - F Tenchini
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - M Uchida
- Tokyo Institute of Technology, Tokyo 152-8550
| | - T Uglov
- Higher School of Economics (HSE), Moscow 101000
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - Y Unno
- Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763
| | - S Uno
- SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - P Urquijo
- School of Physics, University of Melbourne, Victoria 3010
| | - Y Usov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | | | - G Varner
- University of Hawaii, Honolulu, Hawaii 96822
| | - A Vinokurova
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - V Vorobyev
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
- Novosibirsk State University, Novosibirsk 630090
| | - E Waheed
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
| | - C H Wang
- National United University, Miao Li 36003
| | - E Wang
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - M-Z Wang
- Department of Physics, National Taiwan University, Taipei 10617
| | - P Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
| | - X L Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443
| | | | - E Won
- Korea University, Seoul 02841
| | - X Xu
- Soochow University, Suzhou 215006
| | - B D Yabsley
- School of Physics, University of Sydney, New South Wales 2006
| | | | - H Ye
- Deutsches Elektronen-Synchrotron, 22607 Hamburg
| | - J Yelton
- University of Florida, Gainesville, Florida 32611
| | - J H Yin
- Korea University, Seoul 02841
| | - Z P Zhang
- Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026
| | - V Zhilich
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
| | - V Zhukova
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991
| | - V Zhulanov
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- Novosibirsk State University, Novosibirsk 630090
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21
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Sandilya S, Trabelsi K, Mohanty GB, Adachi I, Aihara H, Asner DM, Aushev T, Aziz T, Bakich AM, Bala A, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Dingfelder J, Doležal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Julius T, Kah DH, Kang JH, Kato E, Kawai H, Kawasaki T, Kiesling C, Kim DY, Kim HO, Kim JB, Kim JH, Kim YJ, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu ZQ, Liventsev D, Lukin P, MacNaughton J, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Moll A, Muramatsu N, Mussa R, Nagasaka Y, Nakao M, Nayak M, Ng C, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Oswald C, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Saito T, Sakai K, Sakai Y, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Semmler D, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wiechczynski J, Williams KM, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zupanc A. Search for bottomonium states in exclusive radiative Υ(2S) decays. Phys Rev Lett 2013; 111:112001. [PMID: 24074074 DOI: 10.1103/physrevlett.111.112001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Indexed: 06/02/2023]
Abstract
We search for bottomonium states in Υ(2S) → (bb)γ decays with an integrated luminosity of 24.7 fb(-1) recorded at the Υ(2S) resonance with the Belle detector at KEK, containing (157.8±3.6)×10(6) Υ(2S) events. The (bb) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and K(S)(0) mesons. We find no evidence for the state recently observed around 9975 MeV (X(bb)) in an analysis based on a data sample of 9.3×10(6) Υ(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[Υ(2S) → X(bb)γ] × ∑(i)B[X(bb) → h(i)] < 4.9×10(-6), summed over the exclusive hadronic final states employed in our analysis. This result is an order of magnitude smaller than the measurement reported with CLEO data. We also set an upper limit for the ηb(1S) state of B[Υ(2S) → ηb(1S)γ] × ∑(i)B[ηb(1S) → h(i)] < 3.7×10(-6).
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Affiliation(s)
- S Sandilya
- Tata Institute of Fundamental Research, Mumbai 400005
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Bhardwaj V, Miyabayashi K, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bala A, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwashita T, Julius T, Kah DH, Kang JH, Kato E, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu ZQ, Liventsev D, Lukin P, Matvienko D, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Panzenböck E, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Sahoo H, Saito T, Sakai K, Sakai Y, Sandilya S, Santel D, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Seidl R, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yook Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence of a new narrow resonance decaying to χ(c1)γ in B→χ(c1)γK. Phys Rev Lett 2013; 111:032001. [PMID: 23909309 DOI: 10.1103/physrevlett.111.032001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Indexed: 06/02/2023]
Abstract
We report measurements of B→χ(c1)γK and χ(c2)γK decays using 772×10(6) BB[over ¯] events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Evidence of a new resonance in the χ(c1)γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c(2), a value that is consistent with theoretical expectations for the previously unseen 1(3)D(2) cc[over ¯] meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χ(c1)γ and χ(c2)γ decays.
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23
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Liu ZQ, Shen CP, Yuan CZ, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bala A, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chang P, Chekelian V, Chen A, Chen P, Cheon BG, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Joffe D, Julius T, Kah DH, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Oswald C, Pakhlov P, Pakhlova G, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Sahoo H, Saito T, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Seidl R, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yook Y, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zupanc A. Study of e+ e- → π+ π- J/ψ and observation of a charged charmoniumlike state at Belle. Phys Rev Lett 2013; 110:252002. [PMID: 23829730 DOI: 10.1103/physrevlett.110.252002] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Indexed: 06/02/2023]
Abstract
The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.
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Affiliation(s)
- Z Q Liu
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
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Hara K, Horii Y, Iijima T, Adachi I, Aihara H, Asner DM, Aushev T, Aziz T, Bakich AM, Barrett M, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Cinabro D, Dalseno J, Dingfelder J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Epifanov D, Esen S, Farhat H, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Higuchi T, Hoshi Y, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Ng C, Nisar NK, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence for B- → τ- ν(τ) with a hadronic tagging method using the full data sample of Belle. Phys Rev Lett 2013; 110:131801. [PMID: 23581309 DOI: 10.1103/physrevlett.110.131801] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Indexed: 06/02/2023]
Abstract
We measure the branching fraction of B- → τ- ν(τ) using the full Υ(4S) data sample containing 772×10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Events with BB pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- → τ- ν(τ) candidates are detected in the recoil. We find evidence for B- → τ- ν(τ) with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- → τ- ν(τ))=[0.72(-0.25)(+0.27)(stat)±0.11(syst)]×10(-4).
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Affiliation(s)
- K Hara
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
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Mizuk R, Asner DM, Bondar A, Pedlar TK, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bay A, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Jaegle I, Julius T, Kang JH, Kapusta P, Kawasaki T, Kim HJ, Kim HO, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Mohapatra D, Moll A, Muramatsu N, Mussa R, Nakao M, Natkaniec Z, Ng C, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park H, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tanida K, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yuan CZ, Zhang ZP, Zhilich V. Evidence for the η(b)(2S) and observation of h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ. Phys Rev Lett 2012; 109:232002. [PMID: 23368184 DOI: 10.1103/physrevlett.109.232002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Indexed: 06/01/2023]
Abstract
We report the first evidence for the η(b)(2S) using the h(b)(2P)→η(b)(2S)γ transition and the first observation of the h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ transitions. The mass and width of the η(b)(1S) and η(b)(2S) are measured to be m(η(b)(1S))=(9402.4±1.5±1.8) MeV/c(2), m(η(b)(2S))=(9999.0±3.5(-1.9)(+2.8)) MeV/c(2), and Γ(η(b)(1S))=(10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b)(1P) and h(b)(2P) mass measurements. We use a 133.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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Affiliation(s)
- R Mizuk
- Institute for Theoretical and Experimental Physics, Moscow
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Stypula J, Rozanska M, Adachi I, Adamczyk K, Aihara H, Asner DM, Aushev T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chekelian V, Chen A, Chen P, Cheon BG, Chistov R, Cho IS, Cho K, Choi Y, Dalseno J, Danilov M, Dingfelder J, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Farhat H, Fast JE, Gaur V, Gabyshev N, Gillard R, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Julius T, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim JB, Kim JH, Kim KT, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Nakano E, Nakao M, Natkaniec Z, Ng C, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Teramoto Y, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wang P, Wang XL, Watanabe M, Watanabe Y, Wiechczynski J, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence forB−→Ds+K−ℓ−ν¯ℓand search forB−→Ds*+K−ℓ−ν¯ℓ. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.86.072007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Shen CP, Yuan CZ, Iijima T, Adachi I, Aihara H, Asner DM, Aushev T, Bakich AM, Bay A, Belous K, Bhuyan B, Bischofberger M, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim BH, Kim HO, Kim JB, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Mohapatra D, Moll A, Muramatsu N, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Sahoo H, Sakai Y, Santel D, Sanuki T, Sato Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tatishvili G, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vanhoefer P, Varner G, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Observation of exclusiveΥ(1S)andΥ(2S)decays into light hadrons. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.86.031102] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hara K, Hara T, Hayasaka K, Hayashii H, Higuchi T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Rozanska M, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yamauchi M, Yusa Y, Zhang ZP, Zhilich V, Zupanc A, Zyukova O. Precise measurement of the CP violation parameter sin2φ1 in B0→(cc¯)K0 decays. Phys Rev Lett 2012; 108:171802. [PMID: 22680852 DOI: 10.1103/physrevlett.108.171802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Indexed: 06/01/2023]
Abstract
We present a precise measurement of the CP violation parameter sin2φ1 and the direct CP violation parameter A(f) using the final data sample of 772×10(6) BB[over ¯] pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J/ψK(S)(0), ψ(2S)K(S)(0), χ(c1)K(S)(0), or J/ψK(L)(0) CP eigenstate and its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2φ1=0.667±0.023(stat)±0.012(syst) and A(f)=0.006±0.016(stat)±0.012(syst).
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Affiliation(s)
- I Adachi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
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Sato Y, Yamamoto H, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang P, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Varvell KE, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the CP-violation parameter sin2φ1 with a new tagging method at the Υ(5S) resonance. Phys Rev Lett 2012; 108:171801. [PMID: 22680851 DOI: 10.1103/physrevlett.108.171801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Indexed: 06/01/2023]
Abstract
We report a measurement of the CP-violation parameter sin2φ1 at the Υ(5S) resonance using a new tagging method, called "B-π tagging." In Υ(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructed in the J/ψK(S)(0) CP-eigenstate decay channel. The initial flavor of the neutral B meson at the moment of the Υ(5S) decay is opposite to that of the charged B and may thus be inferred from the charge of the pion without reconstructing the charged B. From the asymmetry between B-π(+) and B-π(-) tagged J/ψK(S)(0) yields, we determine sin2φ1=0.57±0.58(stat)±0.06(syst). The results are based on 121 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.
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Affiliation(s)
- Y Sato
- Tohoku University, Sendai, Japan
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Bondar A, Garmash A, Mizuk R, Santel D, Kinoshita K, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hoshi Y, Hyun HJ, Iijima T, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Muramatsu N, Mussa R, Nakao M, Natkaniec Z, Neubauer S, Niiyama M, Nishida S, Nishimura K, Nitoh O, Nozaki T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Prim M, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Santel D, Sanuki T, Schneider O, Schwanda C, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Uchida M, Uehara S, Uglov T, Ushiroda Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Observation of two charged bottomoniumlike resonances in Υ(5S) decays. Phys Rev Lett 2012; 108:122001. [PMID: 22540572 DOI: 10.1103/physrevlett.108.122001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Indexed: 05/31/2023]
Abstract
We report the observation of two narrow structures in the mass spectra of the π(±)Υ(nS) (n=1, 2, 3) and π(±)h(b)(mP) (m=1, 2) pairs that are produced in association with a single charged pion in Υ(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M(1)=(10,607.2±2.0) MeV/c2, Γ(1)=(18.4±2.4) MeV, and M(2)=(10,652.2±1.5) MeV/c2, Γ(2)=(11.5±2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Υ(5S) resonance at the KEKB asymmetric-energy e+ e- collider.
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Affiliation(s)
- A Bondar
- Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090
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Starič M, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Browder TE, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Golob B, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlova G, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Stanič S, Sumihama M, Sumisawa K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Search for CP violation in D± meson decays to ϕπ±. Phys Rev Lett 2012; 108:071801. [PMID: 22401192 DOI: 10.1103/physrevlett.108.071801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Indexed: 05/31/2023]
Abstract
We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D(±)→K(+)K(-)π(±) and the Cabibbo-favored decays D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) mass region of the ϕ resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+→ϕπ+)=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.
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Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bondar A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Dalseno J, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Esen S, Fast JE, Feindt M, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Iwabuchi M, Iwasaki Y, Jaegle I, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Korpar S, Križan P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Libby J, Liu C, Liventsev D, Louvot R, MacNaughton J, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang XL, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhilich V, Zupanc A. First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P). Phys Rev Lett 2012; 108:032001. [PMID: 22400728 DOI: 10.1103/physrevlett.108.032001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Indexed: 05/31/2023]
Abstract
We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)]=(9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)]=(10,259.8±0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings ΔM(HF)=(+1.7±1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5σ and 11.2σ, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Υ(1S), Υ(2S), and Υ(3S).
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Affiliation(s)
- I Adachi
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Won E, Ko BR, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Barberio E, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liventsev D, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shen CP, Shibata TA, Shiu JG, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Observation of D+ → K(+)η(') and search for CP violation in D+ → π(+)η(') decays. Phys Rev Lett 2011; 107:221801. [PMID: 22182020 DOI: 10.1103/physrevlett.107.221801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Indexed: 05/31/2023]
Abstract
We report the first observation of the doubly Cabibbo-suppressed decays D(+)→K(+)η((')) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D(+)→π(+)η((')) decays are B(D(+)→K(+)η)/B(D(+)→π(+)η)=(3.06±0.43±0.14)% and B(D(+)→K(+)η')/B(D(+)→π(+)η')=(3.77±0.39±0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D(+) decays, δ(TA), is (72±9)° or (288±9)°. We also report the most precise measurements of CP asymmetries to date: A(CP)(D(+)→π(+)η)=(+1.74±1.13±0.19)% and A(CP)(D(+)→π(+)η')=(-0.12±1.12±0.17)%.
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Bhardwaj V, Trabelsi K, Singh JB, Choi SK, Olsen SL, Adachi I, Adamczyk K, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhuyan B, Bischofberger M, Bondar A, Bračko M, Brodzicka J, Browder TE, Chen A, Chen P, Cheon BG, Cho K, Choi Y, Dalseno J, Doležal Z, Eidelman S, Epifanov D, Gaur V, Gabyshev N, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li Y, Libby J, Lim CL, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Ng C, Nishida S, Nitoh O, Nozaki T, Ohshima T, Okuno S, Onuki Y, Pakhlova G, Park CW, Park HK, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Seon O, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tatishvili G, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vossen A, Wang XL, Watanabe M, Watanabe Y, Williams KM, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhou P, Zhulanov V, Zupanc A. Observation of X(3872)→J/ψγ and search for X(3872)→ψ'γ in B decays. Phys Rev Lett 2011; 107:091803. [PMID: 21929226 DOI: 10.1103/physrevlett.107.091803] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Indexed: 05/31/2023]
Abstract
We report a study of B→(J/ψγ)K and B→(ψ'γ)K decay modes using 772×10⁶ B ̅B events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872)→J/ψγ and report the first evidence for χ(c2)→J/ψγ in B→(X_{c ̅cγ)K decays, while in a search for X(3872)→ψ'γ no significant signal is found. We measure the branching fractions, B(B(±)→X(3872)K(±))B(X(3872)→J/ψγ)=(1.78(-0.44)(+0.48)±0.12)×10(-6), B(B(±)→χ(c2)K(±))=(1.11(-0.34)(+0.36)±0.09)×10(-5), B(B(±)→X(3872)K(±))B(X(3872)→ψ'γ)<3.45×10⁶ (upper limit at 90% C.L.), and also provide upper limits for other searches.
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Vossen A, Seidl R, Adachi I, Aihara H, Aushev T, Balagura V, Bartel W, Bischofberger M, Bondar A, Bračko M, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Cho K, Choi Y, Eidelman S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Perdekamp MG, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Kichimi H, Kim HO, Kim MJ, Ko BR, Kumita T, Lange JS, Lee MJ, Lee SH, Leitgab M, Li Y, Liu C, Liventsev D, Louvot R, McOnie S, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Nakano E, Nishida S, Nitoh O, Ogawa A, Ohshima T, Okuno S, Pakhlova G, Park H, Park HK, Petrič M, Piilonen LE, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Seon O, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe Y, Won E, Yabsley BD, Yamashita Y, Zhilich V, Zhou P, Zhulanov V. Observation of transverse polarization asymmetries of charged pion pairs in e+e- annihilation near √s = 10.58 GeV. Phys Rev Lett 2011; 107:072004. [PMID: 21902387 DOI: 10.1103/physrevlett.107.072004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Indexed: 05/31/2023]
Abstract
The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e(+)e(-) annihilation the product of two interference fragmentation functions is measured. We report nonzero asymmetries for pairs of charge-ordered π(+)π(-) pairs, which indicate a significant interference fragmentation function in this channel. The results are obtained from a 672 fb(-1) data sample that contains 711 × 10(6) π(+)π(-) pairs and was collected at and near the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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Affiliation(s)
- A Vossen
- University of Illinois at Urbana-Champaign, 61801, USA
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36
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Horii Y, Trabelsi K, Yamamoto H, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Balagura V, Barberio E, Belous K, Bhuyan B, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi Y, Doležal Z, Eidelman S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kwon YJ, Lee MJ, Lee SH, Li J, Liu C, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ohshima T, Okuno S, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vinokurova A, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang ZP, Zhulanov V, Zupanc A. Evidence for the suppressed decay B(-)→DK(-), D→K(+)π(-). Phys Rev Lett 2011; 106:231803. [PMID: 21770499 DOI: 10.1103/physrevlett.106.231803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Indexed: 05/31/2023]
Abstract
The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which indicates the first evidence of the signal with a significance of 4.1σ. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK)=-0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772×10(6) BB(¯) pair data sample collected at the Υ(4S) resonance with the Belle detector.
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Affiliation(s)
- Y Horii
- Tohoku University, Sendai, Japan
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Li J, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Lim CL, Liu C, Liventsev D, Louvot R, MacNaughton J, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Rozanska M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Ushiroda Y, Usov Y, Vahsen SE, Varner G, Vinokurova A, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang CC, Zhang ZP, Zhilich V, Zhou P, Zhulanov V, Zupanc A. Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370). Phys Rev Lett 2011; 106:121802. [PMID: 21517300 DOI: 10.1103/physrevlett.106.121802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Indexed: 05/30/2023]
Abstract
We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. We measure the branching fractions B(B(s)⁰→J/ψf₀(980); f₀(980)→π(+)π⁻)=(1.16(-0.19)(+0.31)(stat)(-0.17)(+0.15)(syst)(-0.18)(+0.26)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 8.4σ, and B(B(s)⁰→J/ψf₀(1370); f₀(1370)→π(+)π⁻)=(0.34(-0.14)(+0.11)(stat)(-0.02)(+0.03)(syst)(-0.05)(+0.08)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 4.2σ. The last error listed is due to uncertainty in the number of produced B(s)((*))B(s)((*)) pairs.
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Affiliation(s)
- J Li
- Seoul National University, Seoul
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38
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Esen S, Schwartz AJ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Bay A, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Choi Y, Dalseno J, Dash M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Higuchi T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim JH, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee SH, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyata H, Mizuk R, Mohanty GB, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Park CW, Park H, Park HK, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Smerkol P, Solovieva E, Starič M, Sumisawa K, Sumiyoshi T, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zupanc A. Observation of B(s)(0) → D(s)(*)+ D(s)(*)- using e+ e- collisions and a determination of the B(s)-B(s) width difference ΔΓ(s). Phys Rev Lett 2010; 105:201802. [PMID: 21231220 DOI: 10.1103/physrevlett.105.201802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Indexed: 05/30/2023]
Abstract
We have made the first observation of B(s)(0)→D(s)(*)+ D(s)(*)- decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(B(s)(0)→D(s)+ D(s)-)=(1.03(-0.32-0.25)(+0.39+0.26))%, B(B(s)(0)→D(s)(*±) D(s)(∓))=(2.75(-0.71)(+0.83)±0.69)%, and B(B(s)(0)→D(s)*+ D(s)*-)=(3.08(-1.04-0.86)(+1.22+0.85))%; the sum is B[B(s)(0)→D(s)(*)+ D(s)(*)-]=(6.85(-1.30-1.80)(+1.53+1.79))%. Assuming B(s)(0)→D(s)(*)+ D(s)(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓ(s)/cosφ, where ΔΓ(s) is the difference in widths between the two B(s)-B(s) mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓ(s)/Γ(s)=0.147(-0.030)(+0.036)(stat)(-0.041)(+0.042)(syst), where Γ(s) is the mean decay width.
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Affiliation(s)
- S Esen
- University of Cincinnati, Cincinnati, Ohio 45221, USA
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Hyun HJ, Park HK, Kim HO, Park H, Aihara H, Arinstein K, Aushev T, Bakich AM, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Chang MC, Chang P, Chao Y, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Inami K, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim JH, Kim MJ, Ko BR, Kodys P, Krizan P, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee SH, Li J, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Palka H, Park CW, Pestotnik R, Petric M, Piilonen LE, Ryu S, Sahoo H, Sakai Y, Schneider O, Sevior ME, Shapkin M, Shiu JG, Shwartz B, Singh JB, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wang XL, Wedd R, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zyukova O. Search for a low mass particle decaying into μ+ μ- in B0 → K*0 X and B0 → ρ0 X at Belle. Phys Rev Lett 2010; 105:091801. [PMID: 20868151 DOI: 10.1103/physrevlett.105.091801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2010] [Indexed: 05/29/2023]
Abstract
We search for dimuon decays of a low mass particle in the decays B0→K*0 X and B0→ρ0 X using a data sample of 657×10(6)BB events collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We find no evidence for such a particle in the mass range from 212 MeV/c2 to 300 MeV/c2 for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214.3 MeV/c2 reported by the HyperCP experiment, and obtain upper limits on the products B(B0→K*0 X)×B(X→μ+ μ- )<2.26(2.27)×10(-8) and B(B0→ρ0 X)×B(X→μ+ μ-)<1.73(1.73)×10(-8) at 90% C.L. for a scalar (vector) X particle.
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Affiliation(s)
- H J Hyun
- Kyungpook National University, Taegu
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Louvot R, Schneider O, Aushev T, Arinstein K, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Danilov M, Dash M, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Palka H, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Poluektov A, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Stanic S, Staric M, Sumiyoshi T, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zivko T, Zyukova O. Observation of B(s)(0) → D(s)(*-) π+ and B(s)(0) → D(s)(*-) ρ+ and measurement of the B(s)(0) → D(s)(*-) ρ+ longitudinal polarization fraction. Phys Rev Lett 2010; 104:231801. [PMID: 20867227 DOI: 10.1103/physrevlett.104.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Indexed: 05/29/2023]
Abstract
First observations of the B(s)(0) → D(s)(*-) π+, B(s)(0) → D(s)(-) ρ+ and B(s)(0) → D(s)(*-) ρ+ decays are reported together with measurements of their branching fractions: B(B(s)(0) → D(s)(*-) π+) = [2.4(-0.4)(+0.5)(stat) ± 0.3(syst) ± 0.4(f(s))]×10(-3), B(B(s)(0) → D(s)(-) ρ+) = [8.5(-1.2)(+1.3)(stat) ± 1.1(syst) ± 1.3(f(s))]×10(-3) and B(B(s)(0) → D(s)(*-) ρ+) = [11.9(-2.0)(+2.2)(stat) ± 1.7(syst) ± 1.8(f(s))]×10(-3) (f(s) = N(B(s)(*) B(s)(*))/N(bb)). From helicity-angle distributions, we measured the longitudinal polarization fraction in B(s)(0) → D(s)(*-) ρ+ decays to be f(L)(B(s)(0) → D(s)(*-) ρ+) = 1.05(-0.10)(+0.08)(stat)(-0.04)(+0.03)(syst). These results are based on a 23.6 fb(-1) data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider.
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Affiliation(s)
- R Louvot
- Ecole Polytechnique Fédérale de Lausanne, Lausanne
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Ko BR, Won E, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bracko M, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Das A, Dolezal Z, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HO, Kim YJ, Korpar S, Krizan P, Krokovny P, Kuhr T, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyata H, Mizuk R, Nakano E, Nakao M, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Solovieva E, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Search for CP violation in the decays D(s)+ --> KS0pi+ and D(s)+ --> KS0K+. Phys Rev Lett 2010; 104:181602. [PMID: 20482167 DOI: 10.1103/physrevlett.104.181602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Indexed: 05/29/2023]
Abstract
We have searched for CP violation in the charmed meson decays D((s))(+) --> K(S)(0)pi(+) and D((s))(+) --> K(S)(0)K(+) using 673 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No evidence for CP violation is observed. We report the most sensitive CP asymmetry measurements to date for these decays: A(CP)(D(+)-->K(S)(0)pi(+)) = (-0.71 +/- 0.19 +/- 0.20)%, A(CP)(D(s)(+) --> K(S)(0)pi(+)) = (+5.45 +/- 2.50 +/- 0.33)%, A(CP)(D(+) --> K(S)(0)K(+)) = (-0.16 +/- 0.58 +/- 0.25)%, and A(CP)(D(s)(+) --> K(S)(0)K(+)) = (+0.12 +/- 0.36 +/- 0.22)%, where the first uncertainties are statistical and the second are systematic.
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Shen CP, Yuan CZ, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bhardwaj V, Bischofberger M, Bracko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Dalseno J, Das A, Dolezal Z, Drutskoy A, Eidelman S, Epifanov D, Gabyshev N, Golob B, Ha H, Haba J, Han BY, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JH, Kim SK, Kim YI, Kim YJ, Ko BR, Kodys P, Korpar S, Kreps M, Krizan P, Krokovny P, Kuhr T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mori T, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Senyo K, Sevior ME, Shapkin M, Shiu JG, Shwartz B, Singh JB, Smerkol P, Sokolov A, Solovieva E, Staric M, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vervink K, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Zhang CC, Zhang ZP, Zivko T, Zyukova O. Evidence for a new resonance and search for the Y(4140) in the gammagamma-->phiJ/psi process. Phys Rev Lett 2010; 104:112004. [PMID: 20366468 DOI: 10.1103/physrevlett.104.112004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2009] [Indexed: 05/29/2023]
Abstract
The process gammagamma-->phiJ/psi is measured using a data sample of 825 fb{-1} collected with the Belle detector. A narrow peak of 8.8{-3.2}{+4.2} events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The mass and natural width of the structure [named X(4350)] are measured to be [4350.6{-5.1}{+4.6}(stat)+/-0.7(syst)] MeV/c{2} and [13{-9}{+18}(stat)+/-4(syst)] MeV, respectively. The product of its two-photon decay width and branching fraction to phiJ/psi is [6.7{-2.4}{+3.2}(stat)+/-1.1(syst)] eV for J{P}=0{+}, or [1.5{-0.6}{+0.7}(stat)+/-0.3(syst)] eV for J{P}=2{+}. No signal for the Y(4140)-->phiJ/psi structure reported by the CDF Collaboration in B-->K{+}phiJ/psi decays is observed, and limits of Gamma_{gammagamma}(Y(4140))B(Y(4140)-->phiJ/psi)<41 eV for J{P}=0;{+} or <6.0 eV for J{P}=2{+} are determined at the 90% C.L. This disfavors the scenario in which the Y(4140) is a D{s}{*+}D{s}{*-} molecule.
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Affiliation(s)
- C P Shen
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
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Uehara S, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bischofberger M, Bracko M, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Choi SK, Choi Y, Dalseno J, Drutskoy A, Eidelman S, Epifanov D, Feindt M, Gabyshev N, Ha H, Haba J, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim JH, Kim YI, Kim YJ, Ko BR, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Singh JB, Smerkol P, Solovieva E, Staric M, Teramoto Y, Trabelsi K, Unno Y, Uno S, Urquijo P, Varner G, Vervink K, Wang CH, Wang P, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zivko T, Zyukova O. Observation of a charmoniumlike enhancement in the gammagamma-->omega(J)/psi process. Phys Rev Lett 2010; 104:092001. [PMID: 20366981 DOI: 10.1103/physrevlett.104.092001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Indexed: 05/29/2023]
Abstract
We report the results of a search for a charmoniumlike state produced in the process gammagamma-->omegaJ/psi in the 3.9-4.2 GeV/c{2} mass region. We observe a significant enhancement, which is well described by a resonant shape with mass M=(3915+/-3+/-2) MeV/c{2} and total width Gamma=(17+/-10+/-3) MeV. This enhancement may be related to one or more of the three charmoniumlike states so far reported in the 3.90-3.95 GeV/c{2} mass region.
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Affiliation(s)
- S Uehara
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Urquijo P, Barberio E, Adachi I, Aihara H, Arinstein K, Bakich AM, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bracko M, Browder TE, Chao Y, Chen A, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Das A, Dash M, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki M, Kah DH, Kang JH, Katayama N, Kawai H, Kawasaki T, Kim HO, Kim JH, Kim SK, Kim YI, Kim YJ, Kinoshita K, Ko BR, Kreps M, Krizan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SE, Lee SH, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Louvot R, Mandl F, Matyja A, McOnie S, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ostrowicz W, Ozaki H, Pakhlova G, Park CW, Park HK, Park KS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shiu JG, Shwartz B, Singh JB, Stanic S, Staric M, Sumisawa K, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zhulanov V, Zivko T, Zupanc A, Zyukova O. Measurement of |V{ub}| from inclusive charmless semileptonic B decays. Phys Rev Lett 2010; 104:021801. [PMID: 20366585 DOI: 10.1103/physrevlett.104.021801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Indexed: 05/29/2023]
Abstract
We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi-Maskawa matrix element |V{ub}|, using a multivariate analysis method to access approximately 90% of the B-->X{u}lnu phase space. This approach dramatically reduces the theoretical uncertainties from the b-quark mass and nonperturbative QCD compared to all previous inclusive measurements. The results are based on a sample of 657x10{6} BB[over ] pairs collected with the Belle detector. We find that DeltaB(B-->X{u}lnu;p(l){*B}>1.0 GeV/c)=1.963x(1+/-0.088{stat}+/-0.081{syst})x10{-3}. Corresponding values of |V{ub}| are extracted using several theoretical calculations.
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Affiliation(s)
- P Urquijo
- University of Melbourne, School of Physics, Victoria 3010
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Vervink K, Aushev T, Schneider O, Arinstein K, Bakich AM, Balagura V, Barberio E, Bay A, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chao Y, Chen A, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi Y, Dalseno J, Danilov M, Dungel W, Eidelman S, Fratina S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Inami K, Ishikawa A, Ishino H, Iwasaki Y, Kah DH, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim YI, Kim YJ, Kinoshita K, Ko BR, Korpar S, Križan P, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lee JS, Lee MJ, Li J, Limosani A, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Piilonen LE, Poluektov A, Sahoo H, Sakai Y, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanič S, Stypula J, Sumiyoshi T, Tamura N, Teramoto Y, Trabelsi K, Tsuboyama T, Uehara S, Uglov T, Unno Y, Uno S, Varner G, Wang CC, Wang CH, Wang P, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zhulanov V, Zivko T, Zupanc A, Zwahlen N. Evidence of time-dependentCPviolation in the decayB0→D*+D*−. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.80.111104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Limosani A, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Cheon BG, Choi Y, Dalseno J, Danilov M, Drutskoy A, Dungel W, Eidelman S, Goldenzweig P, Golob B, Ha H, Hayashii H, Hoshi Y, Hou WS, Hyun HJ, Inami K, Itoh R, Iwasaki Y, Julius T, Kah DH, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Ko BR, Korpar S, Kreps M, Krizan P, Krokovny P, Kuhr T, Kumar R, Kwon YJ, Kyeong SH, Lesiak T, Li J, Liu C, Liventsev D, Louvot R, Matyja A, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlova G, Park CW, Park H, Piilonen LE, Rozanska M, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Taylor GN, Teramoto Y, Trabelsi K, Tsuboyama T, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Zhang ZP, Zivko T, Zupanc A. Measurement of inclusive radiative B-meson decays with a photon energy threshold of 1.7 GeV. Phys Rev Lett 2009; 103:241801. [PMID: 20366195 DOI: 10.1103/physrevlett.103.241801] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Indexed: 05/29/2023]
Abstract
Using 605 fb(-1) of data collected at the Upsilon(4S) resonance we present a measurement of the inclusive radiative B-meson decay channel, B-->X(s)gamma. For the lower photon energy thresholds of 1.7, 1.8, 1.9, and 2.0 GeV, as defined in the rest frame of the B meson, we measure the partial branching fraction and the mean and variance of the photon energy spectrum. At the 1.7 GeV threshold we obtain the partial branching fraction BF(B-->X(s)}gamma)=(3.45+/-0.15+/-0.40)x10(-4), where the errors are statistical and systematic.
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Affiliation(s)
- A Limosani
- University of Melbourne, School of Physics, Victoria 3010
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Wei JT, Chang P, Adachi I, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bondar A, Bozek A, Bracko M, Browder TE, Chang YW, Chao Y, Chen A, Chen KF, Cheon BG, Chiang CC, Cho IS, Choi Y, Dalseno J, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Han BY, Hayasaka K, Hayashii H, Hazumi M, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kaji H, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Ko BR, Korpar S, Krizan P, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Louvot R, Mandl F, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlova G, Park CW, Park H, Park HK, Park KS, Piilonen LE, Rozanska M, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Zhang ZP, Zivko T, Zupanc A, Zyukova O. Measurement of the differential branching fraction and forward-backward asymmetry for B --> K(*)l+l-. Phys Rev Lett 2009; 103:171801. [PMID: 19905747 DOI: 10.1103/physrevlett.103.171801] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2009] [Indexed: 05/28/2023]
Abstract
We study B --> K(*)l+l- decays (l = e, mu) based on a data sample of 657 x 10(6) BB pairs collected with the Belle detector at the KEKB e+e- collider. We report the differential branching fraction, isospin asymmetry, K* polarization, and the forward-backward asymmetry (A(FB)) as functions of q2 = M(ll)(2)c2. The fitted A(FB) spectrum exceeds the standard model expectation by 2.7 standard deviations. The measured branching fractions are B(B --> K*l+l-) = (10.7(-1.0)(+1.1) +/- 0.9) x 10(-7) and B(B --> Kl+l-) = (4.8(-0.4)(+0.5) +/- 0.3) x 10(-7), where the first errors are statistical and the second are systematic, with the muon to electron ratios R(K*) = 0.83 +/- 0.17 +/- 0.08 and R(K) = 1.03 +/- 0.19 +/- 0.06.
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Affiliation(s)
- J-T Wei
- Department of Physics, National Taiwan University, Taipei
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Ko BR, Won E, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chen A, Cheon BG, Cho IS, Choi Y, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Han BY, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hyun HJ, Itoh R, Iwasaki M, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liu Y, Liventsev D, Louvot R, Macnaughton J, Mandl F, McOnie S, Medvedeva T, Miyata H, Miyazaki Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Park KS, Pestotnik R, Piilonen LE, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trebelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Observation of the doubly cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-}. Phys Rev Lett 2009; 102:221802. [PMID: 19658854 DOI: 10.1103/physrevlett.102.221802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Indexed: 05/28/2023]
Abstract
We report the first observation of the doubly Cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-} using 605 fb;{-1} of data collected with the Belle detector at the KEKB asymmetric-energy e;{+}e;{-} collider. The branching ratio with respect to its Cabibbo-favored counterpart B(D_{s};{+}-->K;{+}K;{+}pi;{-})/B(D_{s};{+}-->K;{+}K;{-}pi;{+}) is (0.229+/-0.028+/-0.012)%, where the first uncertainty is statistical and the second is systematic. We also report a significantly improved measurement of the doubly Cabibbo-suppressed decay D;{+}-->K;{+}pi;{+}pi;{-}, with a branching ratio B(D;{+}-->K;{+}pi;{+}pi;{-})/B(D;{+}-->K;{-}pi;{+}pi;{+})=(0.569+/-0.018+/-0.014)%.
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Louvot R, Wicht J, Schneider O, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bay A, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chen A, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlova G, Park CW, Park HK, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schümann J, Schwartz AJ, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vervink K, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zivko T, Zupanc A, Zwahlen N, Zyukova O. Measurement of the Decay B_(s);(0)-->D_(s);(-)pi;(+) and Evidence for B_(s);(0)-->D_(s);(-/+)K;(+/-) in e;(+)e;(-) Annihilation at sqrt[s] approximately 10.87 GeV. Phys Rev Lett 2009; 102:021801. [PMID: 19257264 DOI: 10.1103/physrevlett.102.021801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2008] [Revised: 11/20/2008] [Indexed: 05/27/2023]
Abstract
We have studied B_(s);(0)-->D_(s);(-)pi;(+) and B_(s);(0)-->D_(s);(-/+)K;(+/-) decays using 23.6 fb;(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e;(+)e;(-) collider. This highly pure B_(s);(0)-->D_(s);(-)pi;(+) sample is used to measure the branching fraction, B(B_(s);(0)-->D_(s);(-)pi;(+))=[3.67_(-0.33);(+0.35)(stat)-0.42+0.43(syst)+/-0.49(f_(s))]x10;(-3) (f_(s)=N_(B_(s);((*))B[over ]_(s);((*)))/N_(bb[over ])) and the fractions of B_(s);(0) event types at the Upsilon(5S) energy, in particular N_(B_(s);(*)B[over ]_(s);(*))/N_(B_(s);((*))B[over ]_(s);((*)))=(90.1_(-4.0);(+3.8)+/-0.2)%. We also determine the masses M(B_(s);(0))=(5364.4+/-1.3+/-0.7) MeV/c;(2) and M(B_(s);(*))=(5416.4+/-0.4+/-0.5) MeV/c;(2). In addition, we observe B_(s);(0)-->D_(s);(-/+)K;(+/-) decays with a significance of 3.5sigma and measure B(B_(s);(0)-->D_(s);(-/+)K;(+/-))=[2.4_(-1.0);(+1.2)(stat)+/-0.3(syst)+/-0.3(f_(s))]x10;(-4).
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Affiliation(s)
- R Louvot
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne
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50
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Li J, Adachi I, Arinstein K, Aushev T, Bakich AM, Balagura V, Bedny I, Bhardwaj V, Bitenc U, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Cheon BG, Chistov R, Choi Y, Dalseno J, Drutskoy A, Eidelman S, Gabyshev N, Ha H, Hara K, Hasegawa Y, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kyeong SH, Liu C, Liu Y, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Nagasaka Y, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlova G, Park CW, Park H, Park HK, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schwanda C, Sekiya A, Senyo K, Shapkin M, Shiu JG, Shwartz B, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Varvell KE, Vervink K, Vinokurova A, Wang CH, Wang P, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Measurement of the time-dependent CP asymmetries in B0-->K(S)(0)rho(0)gamma decays. Phys Rev Lett 2008; 101:251601. [PMID: 19113693 DOI: 10.1103/physrevlett.101.251601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Indexed: 05/27/2023]
Abstract
We report the first measurement of time-dependent CP asymmetry in B(0)-->K(S)(0)rho(0)gamma decays based on 657 x 10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy collider. We measure the CP-violating parameter S_{K_{S};{0}rho;{0}gamma}=0.11+/-0.33(stat)-0.09+0.05(syst) from a signal of 212+/-17 events. We also obtain the effective direct CP-violating parameter A{eff}=0.05+/-0.18(stat)+/-0.06(syst) for mK(S)0pi+pi- <1.8 GeV/c(2) and 0.6 GeV/c(2)<m pi+pi- <0.9 GeV/c2.
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Affiliation(s)
- J Li
- University of Hawaii, Honolulu, Hawaii 96822, USA
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