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O'Neill L, Williams S, Harrison J, Chubb H, Whitaker J, Mukherjee R, Bloch L, Anderson N, Dam H, Jensen H, Niederer S, O'Neill M. 78Voltage and pace- capture mapping of linear ablation lesions overestimate chronic gap size. Europace 2017. [DOI: 10.1093/europace/eux283.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Bjoern MB, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Borysova M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chitic SG, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, Davis A, De Aguiar Francisco O, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Douglas L, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Federici L, Ferguson D, Fernandez G, Fernandez Declara P, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gabriel E, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Grabowski JP, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruber L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hancock T, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hasse C, Hatch M, He J, Hecker M, Heinicke K, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Ibis P, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kazeev N, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozeiha M, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li PR, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Lisovskyi V, Liu X, Loh D, Loi A, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Macko V, Mackowiak P, Maddock B, Maddrell-Mander S, Maev O, Maguire K, Maisuzenko D, Majewski MW, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Marangotto D, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Mead JV, Meadows B, Meaux C, Meier F, Meinert N, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Millard E, Minard MN, Minzoni L, Mitzel DS, Mogini A, Molina Rodriguez J, Mombacher T, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Pullen H, Punzi G, Qian W, Quagliani R, Quintana B, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Ravonel Salzgeber M, Reboud M, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Robert A, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Ruiz Vidal J, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarpis G, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stepanova M, Stevens H, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, Szymanski M, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Usachov A, Ustyuzhanin A, Uwer U, Vacca C, Vagner A, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zonneveld JB, Zucchelli S. Observation of the Doubly Charmed Baryon Ξ_{cc}^{++}. PHYSICAL REVIEW LETTERS 2017; 119:112001. [PMID: 28949228 DOI: 10.1103/physrevlett.119.112001] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 06/07/2023]
Abstract
A highly significant structure is observed in the Λ_{c}^{+}K^{-}π^{+}π^{+} mass spectrum, where the Λ_{c}^{+} baryon is reconstructed in the decay mode pK^{-}π^{+}. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ_{cc}^{++}. The difference between the masses of the Ξ_{cc}^{++} and Λ_{c}^{+} states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c^{2}, and the Ξ_{cc}^{++} mass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ_{c}^{+}) MeV/c^{2}, where the last uncertainty is due to the limited knowledge of the Λ_{c}^{+} mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb^{-1}, and confirmed in an additional sample of data collected at 8 TeV.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d’Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D’Ambrosio C, Da Cunha Marinho F, Dall’Occo E, Dalseno J, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O’Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T’Jampens S, Tayduganov A, Tekampe T, Teklishyn M, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Usachov A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Study of charmonium production in b -hadron decays and first evidence for the decay B s 0 → ϕ ϕ ϕ. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2017; 77:609. [PMID: 31997939 PMCID: PMC6956955 DOI: 10.1140/epjc/s10052-017-5151-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 08/20/2017] [Indexed: 06/10/2023]
Abstract
Using decays to ϕ -meson pairs, the inclusive production of charmonium states in b -hadron decays is studied with pp collision data corresponding to an integrated luminosity of 3.0 fb - 1 , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. Denoting by B C ≡ B ( b → C X ) × B ( C → ϕ ϕ ) the inclusive branching fraction of a b hadron to a charmonium state C that decays into a pair of ϕ mesons, ratios R C 2 C 1 ≡ B C 1 / B C 2 are determined as R η c ( 1 S ) χ c 0 = 0.147 ± 0.023 ± 0.011 , R η c ( 1 S ) χ c 1 = 0.073 ± 0.016 ± 0.006 , R η c ( 1 S ) χ c 2 = 0.081 ± 0.013 ± 0.005 , R χ c 0 χ c 1 = 0.50 ± 0.11 ± 0.01 , R χ c 0 χ c 2 = 0.56 ± 0.10 ± 0.01 and R η c ( 1 S ) η c ( 2 S ) = 0.040 ± 0.011 ± 0.004 . Here and below the first uncertainties are statistical and the second systematic. Upper limits at 90% confidence level for the inclusive production of X(3872), X(3915) and χ c 2 ( 2 P ) states are obtained as R χ c 1 X ( 3872 ) < 0.34 , R χ c 0 X ( 3915 ) < 0.12 and R χ c 2 χ c 2 ( 2 P ) < 0.16 . Differential cross-sections as a function of transverse momentum are measured for the η c ( 1 S ) and χ c states. The branching fraction of the decay B s 0 → ϕ ϕ ϕ is measured for the first time, B ( B s 0 → ϕ ϕ ϕ ) = ( 2.15 ± 0.54 ± 0.28 ± 0 . 21 B ) × 10 - 6 . Here the third uncertainty is due to the branching fraction of the decay B s 0 → ϕ ϕ , which is used for normalization. No evidence for intermediate resonances is seen. A preferentially transverse ϕ polarization is observed. The measurements allow the determination of the ratio of the branching fractions for the η c ( 1 S ) decays to ϕ ϕ and p p ¯ as B ( η c ( 1 S ) → ϕ ϕ ) / B ( η c ( 1 S ) → p p ¯ ) = 1.79 ± 0.14 ± 0.32 .
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozachuk A, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Measurement of B_{s}^{0} and D_{s}^{-} Meson Lifetimes. PHYSICAL REVIEW LETTERS 2017; 119:101801. [PMID: 28949189 DOI: 10.1103/physrevlett.119.101801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Indexed: 06/07/2023]
Abstract
We report on a measurement of the flavor-specific B_{s}^{0} lifetime and of the D_{s}^{-} lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0 fb^{-1} of integrated luminosity. Approximately 407 000 B_{s}^{0}→D_{s}^{(*)-}μ^{+}ν_{μ} decays are partially reconstructed in the K^{+}K^{-}π^{-}μ^{+} final state. The B_{s}^{0} and D_{s}^{-} natural widths are determined using, as a reference, kinematically similar B^{0}→D^{(*)-}μ^{+}ν_{μ} decays reconstructed in the same final state. The resulting differences between widths of B_{s}^{0} and B^{0} mesons and of D_{s}^{-} and D^{-} mesons are Δ_{Γ}(B)=-0.0115±0.0053(stat)±0.0041(syst) ps^{-1} and Δ_{Γ}(D)=1.0131±0.0117(stat)±0.0065(syst) ps^{-1}, respectively. Combined with the known B^{0} and D^{-} lifetimes, these yield the flavor-specific B_{s}^{0} lifetime, τ_{B_{s}^{0}}^{fs}=1.547±0.013(stat)±0.010(syst)±0.004(τ_{B}) ps and the D_{s}^{-} lifetime, τ_{D_{s}^{-}}=0.5064±0.0030(stat)±0.0017(syst)±0.0017(τ_{D}) ps. The last uncertainties originate from the limited knowledge of the B^{0} and D^{-} lifetimes. The results improve upon current determinations.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gabriel E, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruber L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozachuk A, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Morris AP, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Ravonel Salzgeber M, Reboud M, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zonneveld JB, Zucchelli S. Observation of the Decays Λ_{b}^{0}→χ_{c1}pK^{-} and Λ_{b}^{0}→χ_{c2}pK^{-}. PHYSICAL REVIEW LETTERS 2017; 119:062001. [PMID: 28949591 DOI: 10.1103/physrevlett.119.062001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Indexed: 06/07/2023]
Abstract
The first observation of the decays Λ_{b}^{0}→χ_{c1}pK^{-} and Λ_{b}^{0}→χ_{c2}pK^{-} is reported using a data sample corresponding to an integrated luminosity of 3.0 fb^{-1}, collected by the LHCb experiment in pp collisions at center-of-mass energies of 7 and 8 TeV. The following ratios of branching fractions are measured: B(Λ_{b}^{0}→χ_{c1}pK^{-})/B(Λ_{b}^{0}→J/ψpK^{-})=0.242±0.014±0.013±0.009,B(Λ_{b}^{0}→χ_{c2}pK^{-})/B(Λ_{b}^{0}→J/ψpK^{-})=0.248±0.020±0.014±0.009,B(Λ_{b}^{0}→χ_{c2}pK^{-})/B(Λ_{b}^{0}→χ_{c1}pK^{-})=1.02±0.10±0.02±0.05,where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the branching fractions of the χ_{c1}→J/ψγ and χ_{c2}→J/ψγ decays. Using both decay modes, the mass of the Λ_{b}^{0} baryon is also measured to be m_{Λ_{b}^{0}}=5619.44±0.28±0.26 MeV/c^{2}, where the first and second uncertainties are statistical and systematic, respectively.
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Poppe K, Doughty R, Harwood M, Barber P, Harrison J, Jackson R, Wells S. P1546Suboptimal management of cardiovascular risk among people with atrial fibrillation - an opportunity for improvement? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Poppe K, Doughty R, Harwood M, Barber P, Harrison J, Jackson R, Wells S. P5828Stroke and cardiovascular outcomes for patients with atrial fibrillation in the community - an opportunity for improvement? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Reinke M, Meigs A, Delabie E, Mumgaard R, Reimold F, Potzel S, Bernert M, Brunner D, Canik J, Cavedon M, Coffey I, Edlund E, Harrison J, LaBombard B, Lawson K, Lomanowski B, Lore J, Stamp M, Terry J, Viezzer E. Expanding the role of impurity spectroscopy for investigating the physics of high-Z dissipative divertors. NUCLEAR MATERIALS AND ENERGY 2017. [DOI: 10.1016/j.nme.2016.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gabriel E, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruber L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maddock B, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Ravonel Salzgeber M, Reboud M, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagner A, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zonneveld JB, Zucchelli S. First Observation of a Baryonic B_{s}^{0} Decay. PHYSICAL REVIEW LETTERS 2017; 119:041802. [PMID: 29341762 DOI: 10.1103/physrevlett.119.041802] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Indexed: 06/07/2023]
Abstract
We report the first observation of a baryonic B_{s}^{0} decay, B_{s}^{0}→pΛ[over ¯]K^{-}, using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb^{-1}. The branching fraction is measured to be B(B_{s}^{0}→pΛ[over ¯]K^{-})+B(B_{s}^{0}→p[over ¯]ΛK^{+})=[5.46±0.61±0.57±0.50(B)±0.32(f_{s}/f_{d})]×10^{-6}, where the first uncertainty is statistical and the second systematic, the third uncertainty accounts for the experimental uncertainty on the branching fraction of the B^{0}→pΛ[over ¯]π^{-} decay used for normalization, and the fourth uncertainty relates to the knowledge of the ratio of b-quark hadronization probabilities f_{s}/f_{d}.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Koopman RF, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Snoek H, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Measurement of the CP Violation Parameter A_{Γ} in D^{0}→K^{+}K^{-} and D^{0}→π^{+}π^{-} Decays. PHYSICAL REVIEW LETTERS 2017; 118:261803. [PMID: 28707946 DOI: 10.1103/physrevlett.118.261803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Indexed: 06/07/2023]
Abstract
Asymmetries in the time-dependent rates of D^{0}→K^{+}K^{-} and D^{0}→π^{+}π^{-} decays are measured in a pp collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of 3 fb^{-1}. The asymmetries in effective decay widths between D^{0} and D[over ¯]^{0} decays, sensitive to indirect CP violation, are measured to be A_{Γ}(K^{+}K^{-})=(-0.30±0.32±0.10)×10^{-3} and A_{Γ}(π^{+}π^{-})=(0.46±0.58±0.12)×10^{-3}, where the first uncertainty is statistical and the second systematic. These measurements show no evidence for CP violation and improve on the precision of the previous best measurements by nearly a factor of two.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozachuk A, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Mordà A, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Ossowska A, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Search for the Decays B_{s}^{0}→τ^{+}τ^{-} and B^{0}→τ^{+}τ^{-}. PHYSICAL REVIEW LETTERS 2017; 118:251802. [PMID: 28696756 DOI: 10.1103/physrevlett.118.251802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Indexed: 06/07/2023]
Abstract
A search for the rare decays B_{s}^{0}→τ^{+}τ^{-} and B^{0}→τ^{+}τ^{-} is performed using proton-proton collision data collected with the LHCb detector. The data sample corresponds to an integrated luminosity of 3 fb^{-1} collected in 2011 and 2012. The τ leptons are reconstructed through the decay τ^{-}→π^{-}π^{+}π^{-}ν_{τ}. Assuming no contribution from B^{0}→τ^{+}τ^{-} decays, an upper limit is set on the branching fraction B(B_{s}^{0}→τ^{+}τ^{-})<6.8×10^{-3} at the 95% confidence level. If instead no contribution from B_{s}^{0}→τ^{+}τ^{-} decays is assumed, the limit is B(B^{0}→τ^{+}τ^{-})<2.1×10^{-3} at the 95% confidence level. These results correspond to the first direct limit on B(B_{s}^{0}→τ^{+}τ^{-}) and the world's best limit on B(B^{0}→τ^{+}τ^{-}).
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O'neill L, Williams S, Linton N, Harrison J, Whitaker J, Mukherjee R, Rinaldi CA, Gill J, Niederer S, Wright M, O'neill M. P1589Left atrial bipolar voltage: dependence on activation rate. Europace 2017. [DOI: 10.1093/ehjci/eux158.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Whitaker J, Fish J, Chubb H, Harrison J, Williams S, Sohal M, Van Zaen J, Gibbs J, Rittey D, Thorsten J, Donskoy E, Mukherjee R, O'neill L, Wright M, O'neill M. P877Lesion Index facilitates continuous transmural radiofrequency ablation lesions in a porcine recovery model. Europace 2017. [DOI: 10.1093/ehjci/eux151.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Williams S, O'neill L, Sohns C, Metzner A, Reissmann B, Whitaker J, Mukherjee R, Harrison J, Wright M, Niederer S, O'neill M. P1385Effective atrial conducting size does not predict human AF vulnerability. Europace 2017. [DOI: 10.1093/ehjci/eux158.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rhynas SJ, Garrido AG, MacArthur J, Harrison J, MacLullich A, Shenkin S. 133A Life Changing Decision: Exploring Different Perspectives Of Risk In Care Home Discharge Decision Making. Age Ageing 2017. [DOI: 10.1093/ageing/afx068.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collazuol G, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Okhrimenko O, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Study of J/ψ Production in Jets. PHYSICAL REVIEW LETTERS 2017; 118:192001. [PMID: 28548519 DOI: 10.1103/physrevlett.118.192001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Indexed: 06/07/2023]
Abstract
The production of J/ψ mesons in jets is studied in the forward region of proton-proton collisions using data collected with the LHCb detector at a center-of-mass energy of 13 TeV. The fraction of the jet transverse momentum carried by the J/ψ meson, z(J/ψ)≡p_{T}(J/ψ)/p_{T}(jet), is measured using jets with p_{T}(jet)>20 GeV in the pseudorapidity range 2.5<η(jet)<4.0. The observed z(J/ψ) distribution for J/ψ mesons produced in b-hadron decays is consistent with expectations. However, the results for prompt J/ψ production do not agree with predictions based on fixed-order nonrelativistic QCD. This is the first measurement of the p_{T} fraction carried by prompt J/ψ mesons in jets at any experiment.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Perrin-Terrin M, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Measurement of the B_{s}^{0}→μ^{+}μ^{-} Branching Fraction and Effective Lifetime and Search for B^{0}→μ^{+}μ^{-} Decays. PHYSICAL REVIEW LETTERS 2017; 118:191801. [PMID: 28548525 DOI: 10.1103/physrevlett.118.191801] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Indexed: 06/07/2023]
Abstract
A search for the rare decays B_{s}^{0}→μ^{+}μ^{-} and B^{0}→μ^{+}μ^{-} is performed at the LHCb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4 fb^{-1}. An excess of B_{s}^{0}→μ^{+}μ^{-} decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. The branching fraction is measured to be B(B_{s}^{0}→μ^{+}μ^{-})=(3.0±0.6_{-0.2}^{+0.3})×10^{-9}, where the first uncertainty is statistical and the second systematic. The first measurement of the B_{s}^{0}→μ^{+}μ^{-} effective lifetime, τ(B_{s}^{0}→μ^{+}μ^{-})=2.04±0.44±0.05 ps, is reported. No significant excess of B^{0}→μ^{+}μ^{-} decays is found, and a 95% confidence level upper limit, B(B^{0}→μ^{+}μ^{-})<3.4×10^{-10}, is determined. All results are in agreement with the standard model expectations.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski HP, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Di Nezza P, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziewiecki M, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez G, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Govorkova E, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Greim R, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev PH, Huard ZC, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Klimkovich T, Koliiev S, Kolpin M, Komarov I, Kopecna R, Koppenburg P, Kosmyntseva A, Kotriakhova S, Kozachuk A, Kozeiha M, Kravchuk L, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Li Z, Likhomanenko T, Lindner R, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parker W, Parkes C, Passaleva G, Pastore A, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poli Lener M, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Ponce S, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Prisciandaro J, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian C, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Gonzalo D, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schreiner HF, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stoica S, Stone S, Storaci B, Stracka S, Stramaglia ME, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tourinho Jadallah Aoude R, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Verlage TA, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Winn MA, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Observation of Five New Narrow Ω_{c}^{0} States Decaying to Ξ_{c}^{+}K^{-}. PHYSICAL REVIEW LETTERS 2017; 118:182001. [PMID: 28524669 DOI: 10.1103/physrevlett.118.182001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Indexed: 06/07/2023]
Abstract
The Ξ_{c}^{+}K^{-} mass spectrum is studied with a sample of pp collision data corresponding to an integrated luminosity of 3.3 fb^{-1}, collected by the LHCb experiment. The Ξ_{c}^{+} is reconstructed in the decay mode pK^{-}π^{+}. Five new, narrow excited Ω_{c}^{0} states are observed: the Ω_{c}(3000)^{0}, Ω_{c}(3050)^{0}, Ω_{c}(3066)^{0}, Ω_{c}(3090)^{0}, and Ω_{c}(3119)^{0}. Measurements of their masses and widths are reported.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d’Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Baldini W, Barlow RJ, Barschel C, Barsuk S, Barter W, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Benton J, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cauet C, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collazuol G, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D’Ambrosio C, Da Cunha Marinho F, Dall’Occo E, Dalseno J, David PNY, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Gándara MG, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hall S, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hussain N, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Kanso W, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Koliiev S, Kolpin M, Komarov I, Koopman RF, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurin B, Mazurov A, McCann M, McCarthy J, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Muster B, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Novoselov A, O’Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palombo F, Palutan M, Panman J, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Snoek H, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T’Jampens S, Tayduganov A, Tekampe T, Teklishyn M, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vallier A, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Search for massive long-lived particles decaying semileptonically in the LHCb detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2017; 77:224. [PMID: 28515664 PMCID: PMC5408995 DOI: 10.1140/epjc/s10052-017-4744-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/07/2017] [Indexed: 06/07/2023]
Abstract
A search is presented for massive long-lived particles decaying into a muon and two quarks. The dataset consists of proton-proton interactions at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 1 and 2[Formula: see text], respectively. The analysis is performed assuming a set of production mechanisms with simple topologies, including the production of a Higgs-like particle decaying into two long-lived particles. The mass range from 20 to 80 [Formula: see text] and lifetimes from 5 to 100[Formula: see text] are explored. Results are also interpreted in terms of neutralino production in different R-Parity violating supersymmetric models, with masses in the 23-198 GeV/[Formula: see text] range. No excess above the background expectation is observed and upper limits are set on the production cross-section for various points in the parameter space of theoretical models.
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Harrison J, Baker E, Hubbard L, Linden D, Williams J, Escott-Price V, Holmans P. Identification of Biological Pathways to Alzheimer's Disease Using Polygenic Scores. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.2052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
IntroductionSingle nucleotide polymorphisms (SNPs) contribute small increases in risk for late-onset Alzheimer's disease (LOAD). LOAD SNPs cluster around genes with similar biological functions (pathways). Polygenic risk scores (PRS) aggregate the effect of SNPs genome-wide. However, this approach has not been widely used for SNPs within specific pathways.ObjectivesWe investigated whether pathway-specific PRS were significant predictors of LOAD case/control status.MethodsWe mapped SNPs to genes within 8 pathways implicated in LOAD. For our polygenic analysis, the discovery sample comprised 13,831 LOAD cases and 29,877 controls. LOAD risk alleles for SNPs in our 8 pathways were identified at a P-value threshold of 0.5. Pathway-specific PRS were calculated in a target sample of 3332 cases and 9832 controls. The genetic data were pruned with R2 > 0.2 while retaining the SNPs most significantly associated with AD. We tested whether pathway-specific PRS were associated with LOAD using logistic regression, adjusting for age, sex, country, and principal components. We report the proportion of variance in liability explained by each pathway.ResultsThe most strongly associated pathways were the immune response (NSNPs = 9304, = 5.63 × 10−19, R2 = 0.04) and hemostasis (NSNPs = 7832, P = 5.47 × 10−7, R2 = 0.015). Regulation of endocytosis, hematopoietic cell lineage, cholesterol transport, clathrin and protein folding were also significantly associated but accounted for less than 1% of the variance. With APOE excluded, all pathways remained significant except proteasome-ubiquitin activity and protein folding.ConclusionsGenetic risk for LOAD can be split into contributions from different biological pathways. These offer a means to explore disease mechanisms and to stratify patients.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Harrison J, Mistry S. The use of Polygenic Risk Scores to Inform Aetiology of Mood and Psychotic Disorders. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.2051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
IntroductionPolygenic risk scores (PRS) incorporate many small genetic markers that are associated with conditions. This technique was first used to investigate mental illnesses in 2009. Since then, it has been widely used.ObjectivesWe wanted to explore how PRS have been used to the study the aetiology of psychosis, schizophrenia, bipolar disorder and depression.AimsWe aimed to conduct a systematic review, identifying studies that have examined associations between PRS for bipolar disorder, schizophrenia/psychosis and depression and psychopathology-related outcome measures.MethodsWe searched EMBASE, Medline and PsychInfo from 06/08/2009 to 14/03/2016. We hand-searched the reference lists of related papers.ResultsAfter removing duplicates, the search yielded 1043 publications. When irrelevant articles were excluded, 33 articles remained. We found 24 studies using schizophrenia PRS, three using bipolar PRS and nine using depression PRS. Many studies successfully used PRS to predict case/control status. Some studies showed associations between PRS and diagnostic sub-categories. A range of clinical phenotypes and symptoms has been explored. For example, specific PRS are associated with cognitive performance in schizophrenia, psychotic symptoms in bipolar disorder, and frequency of episodes of depression. PRS have also demonstrated genetic overlap between mental illnesses. It was difficult to assess the quality of some studies as not all reported sufficient methodological detail.ConclusionsPRS have enabled us to explore the polygenic architecture of mental illness and demonstrate a genetic basis for some observed features. However, they have yet to give insights into the biology, which underpin mental illnesses.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Ellis N, Quraishy M, Grubb C, Fitch S, Harrison J. Assessing the risk of venous thromboembolism in psychiatric in-patients. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.1197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
IntroductionVenous thromboembolism (VTE) is a potentially fatal condition. Hospital-associated VTE leads to more than 25,000 deaths per year in the UK. Therefore identification of at-risk patients is crucial. Psychiatric in-patients have unique factors which may affect their risk of VTE (antipsychotic prescription, restraint) however there are currently no UK guidelines which specifically address VTE risk in this population.ObjectivesWe assessed VTE risk among psychiatric inpatients in Cardiff and Vale university health board, Wales, UK, and whether proformas currently provided for VTE risk assessment were being completed.MethodsAll acute adult in-patient and old age psychiatric wards were assessed by a team of medical students and a junior doctor over three days. We used the UK department of health VTE risk assessment tool which was adapted to include factors specific for psychiatric patients. We also assessed if there were concerns about prescribing VTE prophylaxis (compression stockings or anticoagulants), because of a history of self-harm or ligature use.ResultsOf the 145 patients included, 0% had a completed VTE risk assessment form. We found 38.6% to be at an increased risk of VTE and there were concerns about prescribing VTE prophylaxis in 31% of patients.ConclusionsOur findings suggest that VTE risk assessment is not being carried out on psychiatric wards. Staff education is needed to improve awareness of VTE. Specific guidance for this population is needed due to the presence of unique risk factors in psychiatric in-patients and concerns regarding VTE prophylaxis.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collazuol G, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Koliiev S, Kolpin M, Komarov I, Koopman RF, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Snoek H, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Observation of B_{c}^{+}→D^{0}K^{+} Decays. PHYSICAL REVIEW LETTERS 2017; 118:111803. [PMID: 28368647 DOI: 10.1103/physrevlett.118.111803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Indexed: 06/07/2023]
Abstract
Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb^{-1}, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the B_{c}^{+}→D^{0}K^{+} decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B^{+}→D[over ¯]^{0}π^{+} decays, a measurement of the branching fraction multiplied by the production rates for B_{c}^{+} relative to B^{+} mesons in the LHCb acceptance is obtained, R_{D^{0}K}=(f_{c}/f_{u})×B(B_{c}^{+}→D^{0}K^{+})=(9.3_{-2.5}^{+2.8}±0.6)×10^{-7}, where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first B_{c}^{+} decay of this nature to be observed.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d’Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Barlow RJ, Barschel C, Barsuk S, Barter W, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collazuol G, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D’Ambrosio C, Da Cunha Marinho F, Dall’Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Dendek A, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Funk W, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hall S, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Koliiev S, Kolpin M, Komarov I, Koopman RF, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li T, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marinangeli M, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurice E, Maurin B, Mazurov A, McCann M, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Morgunova O, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen TD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Nogay A, Novoselov A, O’Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palombo F, Palutan M, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Placinta V, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Ratnikov F, Raven G, Redi F, Reichert S, dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Snoek H, Soares Lavra L, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevens H, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T’Jampens S, Tayduganov A, Tekampe T, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viana Barbosa JV, Viaud B, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vitti M, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yao Y, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhang Y, Zhelezov A, Zheng Y, Zhu X, Zhukov V, Zucchelli S. Measurement of the phase difference between short- and long-distance amplitudes in the [Formula: see text] decay. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2017; 77:161. [PMID: 28408857 PMCID: PMC5368951 DOI: 10.1140/epjc/s10052-017-4703-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/16/2017] [Indexed: 06/07/2023]
Abstract
A measurement of the phase difference between the short- and long-distance contributions to the [Formula: see text] decay is performed by analysing the dimuon mass distribution. The analysis is based on pp collision data corresponding to an integrated luminosity of 3[Formula: see text] collected by the LHCb experiment in 2011 and 2012. The long-distance contribution to the [Formula: see text] decay is modelled as a sum of relativistic Breit-Wigner amplitudes representing different vector meson resonances decaying to muon pairs, each with their own magnitude and phase. The measured phases of the [Formula: see text] and [Formula: see text] resonances are such that the interference with the short-distance component in dimuon mass regions far from their pole masses is small. In addition, constraints are placed on the Wilson coefficients, [Formula: see text] and [Formula: see text], and the branching fraction of the short-distance component is measured.
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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Baldini W, Barlow RJ, Barschel C, Barsuk S, Barter W, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Benton J, Berezhnoy A, Bernet R, Bertolin A, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Bird T, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britsch M, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez D, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cauet C, Cavallero G, Cenci R, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chobanova V, Chrzaszcz M, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collazuol G, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, David PNY, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Demmer M, Derkach D, Deschamps O, Dettori F, Dey B, Di Canto A, Dijkstra H, Dordei F, Dorigo M, Dosil Suárez A, Dovbnya A, Dreimanis K, Dufour L, Dujany G, Dungs K, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Déléage N, Easo S, Ebert M, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, Elsasser C, Ely S, Esen S, Evans HM, Evans T, Falabella A, Farley N, Farry S, Fay R, Fazzini D, Ferguson D, Fernandez Albor V, Fernandez Prieto A, Ferrari F, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fini RA, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fleuret F, Fohl K, Fontana M, Fontanelli F, Forshaw DC, Forty R, Franco Lima V, Frank M, Frei C, Fu J, Furfaro E, Färber C, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, Garcia Martin LM, García Pardiñas J, Garra Tico J, Garrido L, Garsed PJ, Gascon D, Gaspar C, Gavardi L, Gazzoni G, Gerick D, Gersabeck E, Gersabeck M, Gershon T, Ghez P, Gianì S, Gibson V, Girard OG, Giubega L, Gizdov K, Gligorov VV, Golubkov D, Golutvin A, Gomes A, Gorelov IV, Gotti C, Grabalosa Gándara M, Graciani Diaz R, Granado Cardoso LA, Graugés E, Graverini E, Graziani G, Grecu A, Griffith P, Grillo L, Gruberg Cazon BR, Grünberg O, Gushchin E, Guz Y, Gys T, Göbel C, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haines SC, Hall S, Hamilton B, Han X, Hansmann-Menzemer S, Harnew N, Harnew ST, Harrison J, Hatch M, He J, Head T, Heister A, Hennessy K, Henrard P, Henry L, Hernando Morata JA, van Herwijnen E, Heß M, Hicheur A, Hill D, Hombach C, Hopchev H, Hulsbergen W, Humair T, Hushchyn M, Hussain N, Hutchcroft D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jawahery A, Jiang F, John M, Johnson D, Jones CR, Joram C, Jost B, Jurik N, Kandybei S, Kanso W, Karacson M, Kariuki JM, Karodia S, Kecke M, Kelsey M, Kenyon IR, Kenzie M, Ketel T, Khairullin E, Khanji B, Khurewathanakul C, Kirn T, Klaver S, Klimaszewski K, Koliiev S, Kolpin M, Komarov I, Koopman RF, Koppenburg P, Kosmyntseva A, Kozachuk A, Kozeiha M, Kravchuk L, Kreplin K, Kreps M, Krokovny P, Kruse F, Krzemien W, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kuonen AK, Kurek K, Kvaratskheliya T, Lacarrere D, Lafferty G, Lai A, Lambert D, Lanfranchi G, Langenbruch C, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Lees JP, Leflat A, Lefrançois J, Lefèvre R, Lemaitre F, Lemos Cid E, Leroy O, Lesiak T, Leverington B, Li Y, Likhomanenko T, Lindner R, Linn C, Lionetto F, Liu B, Liu X, Loh D, Longstaff I, Lopes JH, Lucchesi D, Lucio Martinez M, Luo H, Lupato A, Luppi E, Lupton O, Lusiani A, Lyu X, Machefert F, Maciuc F, Maev O, Maguire K, Malde S, Malinin A, Maltsev T, Manca G, Mancinelli G, Manning P, Maratas J, Marchand JF, Marconi U, Marin Benito C, Marino P, Marks J, Martellotti G, Martin M, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massacrier LM, Massafferri A, Matev R, Mathad A, Mathe Z, Matteuzzi C, Mauri A, Maurin B, Mazurov A, McCann M, McCarthy J, McNab A, McNulty R, Meadows B, Meier F, Meissner M, Melnychuk D, Merk M, Merli A, Michielin E, Milanes DA, Minard MN, Mitzel DS, Mogini A, Molina Rodriguez J, Monroy IA, Monteil S, Morandin M, Morawski P, Mordà A, Morello MJ, Moron J, Morris AB, Mountain R, Muheim F, Mulder M, Mussini M, Müller D, Müller J, Müller K, Müller V, Naik P, Nakada T, Nandakumar R, Nandi A, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen AD, Nguyen-Mau C, Nieswand S, Niet R, Nikitin N, Nikodem T, Novoselov A, O'Hanlon DP, Oblakowska-Mucha A, Obraztsov V, Ogilvy S, Oldeman R, Onderwater CJG, Otalora Goicochea JM, Otto A, Owen P, Oyanguren A, Pais PR, Palano A, Palombo F, Palutan M, Panman J, Papanestis A, Pappagallo M, Pappalardo LL, Parker W, Parkes C, Passaleva G, Pastore A, Patel GD, Patel M, Patrignani C, Pearce A, Pellegrino A, Penso G, Pepe Altarelli M, Perazzini S, Perret P, Pescatore L, Petridis K, Petrolini A, Petrov A, Petruzzo M, Picatoste Olloqui E, Pietrzyk B, Pikies M, Pinci D, Pistone A, Piucci A, Playfer S, Plo Casasus M, Poikela T, Polci F, Poluektov A, Polyakov I, Polycarpo E, Pomery GJ, Popov A, Popov D, Popovici B, Poslavskii S, Potterat C, Price E, Price JD, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Quagliani R, Rachwal B, Rademacker JH, Rama M, Ramos Pernas M, Rangel MS, Raniuk I, Raven G, Redi F, Reichert S, Dos Reis AC, Remon Alepuz C, Renaudin V, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Robbe P, Rodrigues AB, Rodrigues E, Rodriguez Lopez JA, Rodriguez Perez P, Rogozhnikov A, Roiser S, Rollings A, Romanovskiy V, Romero Vidal A, Ronayne JW, Rotondo M, Rudolph MS, Ruf T, Ruiz Valls P, Saborido Silva JJ, Sadykhov E, Sagidova N, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santimaria M, Santovetti E, Sarti A, Satriano C, Satta A, Saunders DM, Savrina D, Schael S, Schellenberg M, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmelzer T, Schmidt B, Schneider O, Schopper A, Schubert K, Schubiger M, Schune MH, Schwemmer R, Sciascia B, Sciubba A, Semennikov A, Sergi A, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Shires A, Siddi BG, Silva Coutinho R, Silva de Oliveira L, Simi G, Simone S, Sirendi M, Skidmore N, Skwarnicki T, Smith E, Smith IT, Smith J, Smith M, Snoek H, Sokoloff MD, Soler FJP, Souza De Paula B, Spaan B, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Stefko P, Stefkova S, Steinkamp O, Stemmle S, Stenyakin O, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Straticiuc M, Straumann U, Sun L, Sutcliffe W, Swientek K, Syropoulos V, Szczekowski M, Szumlak T, T'Jampens S, Tayduganov A, Tekampe T, Teklishyn M, Tellarini G, Teubert F, Thomas E, van Tilburg J, Tilley MJ, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Toriello F, Tournefier E, Tourneur S, Trabelsi K, Traill M, Tran MT, Tresch M, Trisovic A, Tsaregorodtsev A, Tsopelas P, Tully A, Tuning N, Ukleja A, Ustyuzhanin A, Uwer U, Vacca C, Vagnoni V, Valassi A, Valat S, Valenti G, Vallier A, Vazquez Gomez R, Vazquez Regueiro P, Vecchi S, van Veghel M, Velthuis JJ, Veltri M, Veneziano G, Venkateswaran A, Vernet M, Vesterinen M, Viaud B, Vieira D, Vieites Diaz M, Vilasis-Cardona X, Volkov V, Vollhardt A, Voneki B, Vorobyev A, Vorobyev V, Voß C, de Vries JA, Vázquez Sierra C, Waldi R, Wallace C, Wallace R, Walsh J, Wang J, Ward DR, Wark HM, Watson NK, Websdale D, Weiden A, Whitehead M, Wicht J, Wilkinson G, Wilkinson M, Williams M, Williams MP, Williams M, Williams T, Wilson FF, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton SA, Wraight K, Wright S, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yin H, Yu J, Yuan X, Yushchenko O, Zarebski KA, Zavertyaev M, Zhang L, Zhang Y, Zhelezov A, Zheng Y, Zhokhov A, Zhu X, Zhukov V, Zucchelli S. Observation of the Annihilation Decay Mode B^{0}→K^{+}K^{-}. PHYSICAL REVIEW LETTERS 2017; 118:081801. [PMID: 28282211 DOI: 10.1103/physrevlett.118.081801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Indexed: 06/06/2023]
Abstract
A search for the B^{0}→K^{+}K^{-} decay is performed using pp-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1.0 and 2.0 fb^{-1} at center-of-mass energies of 7 and 8 TeV, respectively. This decay is observed for the first time, with a significance of more than 5 standard deviations. The analysis also results in an improved measurement of the branching fraction for the B_{s}^{0}→π^{+}π^{-} decay. The measured branching fractions are B(B^{0}→K^{+}K^{-})=(7.80±1.27±0.81±0.21)×10^{-8} and B(B_{s}^{0}→π^{+}π^{-})=(6.91±0.54±0.63±0.19±0.40)×10^{-7}. The first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the B^{0}→K^{+}π^{-} branching fraction used as a normalization. For the B_{s}^{0} mode, the fourth accounts for the uncertainty on the ratio of the probabilities for b quarks to hadronize into B_{s}^{0} and B^{0} mesons.
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