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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yasuda S, Kuwata H, Kawamoto K, Shirakawa J, Atobe S, Hoshi Y, Yamasaki M, Nishiyama K, Tachibana H, Yamada K, Kobayashi H, Igoshi K. Effect of highly lipolyzed goat cheese on HL-60 human leukemia cells: antiproliferative activity and induction of apoptotic DNA damage. J Dairy Sci 2012; 95:2248-60. [PMID: 22541454 DOI: 10.3168/jds.2011-4153] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 01/07/2012] [Indexed: 11/19/2022]
Abstract
To establish cheese as a dairy product with health benefits, we embarked on examining the multifunctional role of cheeses, especially in the field of cancer prevention. The current study was designed to investigate whether different types of commercial goat cheeses may possess antiproliferative activity, using an HL-60 human promyelocytic leukemia cell line as a cancer cell model. Among 11 cheese extracts tested at 500μg/mL, 6 (Crottin de Chavignol, Pouligny Saint-Pierre, Chabichou du Poitou, Valencay, Kavli, and Sainte-Maure de Touraine) resulted in a significant decrease of cell viability, which is consistent with a decrease in viable cell number. Compared with the half-maximal inhibitory concentration (IC(50)) value of individual cheeses in cellular proliferation assays, the Pouligny Saint-Pierre extract showed strong inhibition. Incubation of cells in the presence of Pouligny Saint-Pierre extract resulted in induction of cellular morphological changes and apoptotic DNA fragmentation as well as expression of the active form of caspase-3 protein. Based on the quantification of the ratio of free fatty acids to triglycerides in different cheese samples, a significant correlation was detected between lipolytic ripeness and IC(50) values for antiproliferative capacity tested in HL-60 cells. Collectively, these results support a potential role of highly lipolyzed goat cheeses in the prevention of leukemic cell proliferation.
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ko BR, Won E, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, 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, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nagasaka Y, 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 HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Yamamoto H, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence for CP violation in the decay D+ → K(S)(0)π+. PHYSICAL REVIEW LETTERS 2012; 109:021601. [PMID: 23030153 DOI: 10.1103/physrevlett.109.021601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Indexed: 06/01/2023]
Abstract
We observe evidence for CP violation in the decay D+ → K(S)(0)π+ using a data sample with an integrated luminosity of 977 fb(-1) collected by the Belle detector at the KEKB e+ e- asymmetric-energy collider. The CP asymmetry in the decay is measured to be (-0.363±0.094±0.067)%, which is 3.2 standard deviations away from zero, and is consistent with the expected CP violation due to the neutral kaon in the final state.
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Liu ZQ, Shen CP, Yuan CZ, Iijima T, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, 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, Garmash A, Goh YM, Haba J, Hayasaka K, 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 HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Ko BR, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li XR, Li Y, Libby J, Liu C, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, 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 HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, 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, Urquijo P, Varner G, Vinokurova A, Vorobyev V, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamashita Y, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V. Observation of new resonant structures in γγ → ωϕ, ϕϕ, and ωω. PHYSICAL REVIEW LETTERS 2012; 108:232001. [PMID: 23003948 DOI: 10.1103/physrevlett.108.232001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Indexed: 06/01/2023]
Abstract
The processes γγ → ωϕ, ϕϕ, and ωω are measured using an 870 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Production of vector meson pairs is clearly observed and their cross sections are measured for masses that range from threshold to 4.0 GeV. In addition to signals from well established spin-zero and spin-two charmonium states, there are resonant structures below charmonium threshold, which have not been previously observed. We report a spin-parity analysis for the new structures and determine the products of the η(c), χ(c0), and χ(c2) two-photon decay widths and branching fractions to ωϕ, ϕϕ, and ωω.
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Li J, Adachi I, Aihara H, Arinstein K, Asner DM, Aulchenko V, Aushev T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Fast JE, Gaur V, Garmash A, Goh YM, 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, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park HK, Park KS, Pedlar TK, Peng T, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato 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, Sokolov A, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vorobyev V, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yamashita Y, Yuan CZ, Zhang ZP, Zhilich V, Zupanc A. First observation of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. PHYSICAL REVIEW LETTERS 2012; 108:181808. [PMID: 22681063 DOI: 10.1103/physrevlett.108.181808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Indexed: 06/01/2023]
Abstract
We report first observations of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. The 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 obtain the branching fractions B(B(s)(0) → J/ψη)=[5.10±0.50(stat)±0.25(syst)(-0.79)(+1.14)(N(B(s)(*) B(s)(*))]×10(-4), and B(B(s)(0) → J/ψη')=[3.71±0.61(stat)±0.18(syst)(-0.57)(+0.83)(N(B(s)(*) B(s)(*))]×10(-4). The ratio of the two branching fractions is measured to be (B(B(s) → J/ψη'))/(B(B(s) → J/ψη))=0.73±0.14(stat)±0.02(syst).
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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. PHYSICAL REVIEW LETTERS 2012; 108:171802. [PMID: 22680852 DOI: 10.1103/physrevlett.108.171802] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [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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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. PHYSICAL REVIEW LETTERS 2012; 108:171801. [PMID: 22680851 DOI: 10.1103/physrevlett.108.171801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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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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. PHYSICAL REVIEW LETTERS 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] [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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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±. PHYSICAL REVIEW LETTERS 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] [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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Hoi CT, Chang P, Aihara H, Asner DM, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chilikin K, Cho K, Choi Y, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Kang JH, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Kuhr T, Kumita T, Kwon YJ, Lee SH, Li J, Libby J, Liu ZQ, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Nakano E, Nakao M, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Varner G, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamaoka J, Yamashita Y, Yusa Y, Zhilich V, Zupanc A. Evidence for direct CP violation in B±→ηh± and observation of B0→ηK0. PHYSICAL REVIEW LETTERS 2012; 108:031801. [PMID: 22400727 DOI: 10.1103/physrevlett.108.031801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Indexed: 05/31/2023]
Abstract
We report measurements of the branching fractions and CP asymmetries for B(±)→ηh(±) (h=K or π) and the observation of the decay B(0)→ηK(0) from the final data sample of 772×10(6) B ̅B pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching fractions are B(B(±)→ηK(±))=(2.12±0.23±0.11)×10(-6), B(B(±)→ηπ(±))=(4.07±0.26±0.21)×10(-6), and B(B(0)→ηK(0))=(1.27(-0.29)(+0.33)±0.08)×10(-6), where the last decay is observed for the first time with a significance of 5.4 standard deviations (σ). We also find evidence for CP violation in the charged B modes, A(CP)(B(±)→ηK(±))=-0.38±0.11±0.01 and A(CP)(B(±)→ηπ(±))=-0.19±0.06±0.01 with significances of 3.8 σ and 3.0 σ, respectively. For all measurements, the first and second uncertainties are statistical and systematic, respectively.
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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). PHYSICAL REVIEW LETTERS 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] [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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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. PHYSICAL REVIEW LETTERS 2011; 107:221801. [PMID: 22182020 DOI: 10.1103/physrevlett.107.221801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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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Bischofberger M, Hayashii H, Adamczyk K, Aihara H, Aulchenko V, Bakich AM, Balagura V, Barberio E, Belous K, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi Y, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Golob B, Ha H, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Julius T, Kang JH, Kawai H, Kawasaki T, Kiesling C, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Križan P, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Li Y, Liu C, Louvot R, MacNaughton J, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Pakhlova G, Park H, Park HK, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Senyo K, Shapkin M, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Stanič S, Starič M, Sumiyoshi T, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Uno S, Varner G, Vinokurova A, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Won E, Yamamoto H, Yamashita Y, Yuan CZ, Zhou P, Zhulanov V, Zivko T. Search for CP violation in τ±→K(S)0π±ντ decays at Belle. PHYSICAL REVIEW LETTERS 2011; 107:131801. [PMID: 22026842 DOI: 10.1103/physrevlett.107.131801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Indexed: 05/31/2023]
Abstract
We report on a search for CP violation in τ(±)→K(S)(0)π(±)ν(τ) decays using a data sample of 699 fb(-1) collected by the Belle experiment at the KEKB electron-positron asymmetric-energy collider. The CP asymmetry is measured in four bins of the invariant mass of the K(S)(0)π(±) system and found to be compatible with zero with a precision of O(10(-3)) in each mass bin. Limits for the CP violation parameter Im(η(S)) are given at the 90% confidence level. These limits are |Im(η(S))| < 0.026 or better, depending on the parametrization used to describe the hadronic form factors, and improve upon previous limits by 1 order of magnitude.
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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. PHYSICAL REVIEW LETTERS 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] [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. PHYSICAL REVIEW LETTERS 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] [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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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(-). PHYSICAL REVIEW LETTERS 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] [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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Ko BR, Won E, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi KS, Choi SK, Choi Y, Eidelman S, Epifanov D, Feindt M, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Križan P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SH, Liu C, Liventsev D, Louvot R, Matyja A, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Nakano E, Nakao M, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Usov Y, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang MZ, Watanabe Y, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Search for CP violation in the decays D(0)→K(S)(0)P(0). PHYSICAL REVIEW LETTERS 2011; 106:211801. [PMID: 21699287 DOI: 10.1103/physrevlett.106.211801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Indexed: 05/31/2023]
Abstract
We have searched for CP violation in the decays D(0)→K(S)(0)P(0) where P(0) denotes a neutral pseudoscalar meson that is either a π(0), η, or η' using KEKB asymmetric-energy e(+)e(-) collision data corresponding to an integrated luminosity of 791 fb(-1) collected with the Belle detector. No evidence of significant CP violation is observed. We report the most precise CP asymmetry measurement in the decay D(0)→K(S)(0)π(0) to date: A(CP)(D(0)→K(S)(0)π(0))=(-0.28±0.19±0.10)%. We also report the first measurements of CP asymmetries in the decays D(0)→K(S)(0)η and D(0)→K(S)(0)η': A(CP)(D(0)→K(S)(0)η)=(+0.54±0.51±0.16)% and A(CP)(D(0)→K(S)(0)η')=(+0.98±0.67±0.14)%, respectively.
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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). PHYSICAL REVIEW LETTERS 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] [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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Hoshi Y, Naoe M. Differences between Sputtering Methods in The Formation of Amorphous Magnetic Alloy Films. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-58-75] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTFe-Si, Co-Ta and Co-Zr amorphous films have been deposited by using various sputtering methods (conventional rf diode sputtering, rf triode sputtering, dc Targets Facing type sputtering (dc TF sputtering) and dual ion beam sputtering (DIB sputtering)). The lower limit of the Si and Ta content to form amorphous Fe-Si and Co-Ta films changes significantly with the sputtering method. These differences between the sputtering methods are mainly caused by the differences in the plasma potential which affects the amount of ion bombardment to the film surface during sputtering,and the minimum content of Si or Ta to obtain amorphous films decreases as the plasma potential increases. These results indicate that the ion bombardment suppresses the growth of crystallites and promotes the formation of the films with amorphous structures. This is confirmed by the deposition of Co-Ta and Co-Zr amorphous films under the condition of various amount of ion bombardment by using a DIB sputtering system.
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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). PHYSICAL REVIEW LETTERS 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] [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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Nishimura K, Browder TE, Adachi I, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bondar A, Bozek A, Bračko M, Chang MC, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Dalseno J, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki Y, Joshi NJ, Julius T, Kang JH, Kapusta P, Kawai H, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan 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, Mohanty GB, Mori T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Ogawa S, Ohshima T, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park H, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shiu JG, Simon F, Smerkol P, Sokolov A, Solovieva E, Starič M, Sumiyoshi T, Suzuki S, 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, Wicht J, Williams KM, Won E, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhou P, Zhulanov V, Zivko T, Zupanc A, Zyukova O. First measurement of inclusive B→Xsη decays. PHYSICAL REVIEW LETTERS 2010; 105:191803. [PMID: 21231162 DOI: 10.1103/physrevlett.105.191803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Indexed: 05/30/2023]
Abstract
We report a first measurement of inclusive B→Xsη decays, where Xs is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657×10(6)BB pairs accumulated with the Belle detector at the KEKB e+e- collider. For MXs < 2.6 GeV/c2, we measure a branching fraction of [26.1±3.0(stat)-2.1+1.9(syst)-7.1+4.0(model)]×10(-5) and a direct CP asymmetry of ACP=-0.13±0.04-0.03+0.02. Over half of the signal occurs in the range MXs > 1.8 GeV/c2.
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Iguchi Y, Hoshi Y, Takino R, Kimura T, Ozaki I, Kida I, Tsubokawa T, Hashimoto I. P33-6 Subjective distinctness of tactile sensation is represented in the activity of human secondary somatosensory cortex (SII). Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61225-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hoshi Y. S24-2 Basic studies on NIRS: toward further development of functional optical brain imaging. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60155-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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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. PHYSICAL REVIEW LETTERS 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] [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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