Measurement of the B 0 s → J / ψ K 0 S branching fraction ✩

A. Falabella, C. Färber,G. Fardell,C. Farinelli,S. Farry,V. Fave,V. Fernandez Albor,M. Ferro-Luzzi,S. Filippov,C. Fitzpatrick,M. Fontana,F. Fontanelli,R. Forty,O. Francisco,M. Frank,C. Frei,M. Frosini,S. Furcas,A. Gallas Torreira,D. Galli,M. Gandelman,P. Gandini,Y. Gao,J. Garofoli,J. Garra Tico,L. Garrido,D. Gascon,C. Gaspar,R. Gauld,N. Gauvin,M. Gersabeck,T. Gershon,Ph. Ghez,V. Gibson,V. V. Gligorov,C. Göbel,D. Golubkov,A. Golutvin,A. Gomes,H. Gordon,M. Grabalosa Gándara,R. Graciani Diaz,L. A. Granado Cardoso,E. Graugés,G. Graziani,A. Grecu,E. Greening,S. Gregson,B. Gui,E. Gushchin,Yu. Guz,T. Gys,C. Hadjivasiliou,G. Haefeli,C. Haen,S. C. Haines,T. Hampson,S. Hansmann-Menzemer,R. Harji,N. Harnew,J. Harrison,P. F. Harrison,T. Hartmann,J. He,V. Heijne,K. Hennessy,P. Henrard,J. A. Hernando Morata,E. van Herwijnen,E. Hicks,K. Holubyev,P. Hopchev,W. Hulsbergen,P. Hunt,T. Huse,R. S. Huston,D. Hutchcroft,D. Hynds,V. Iakovenko,P. Ilten,J. Imong,R. Jacobsson,A. Jaeger,M. Jahjah Hussein,E. Jans,F. Jansen,P. Jaton,B. Jean-Marie,F. Jing,M. John,D. Johnson,C. R. Jones,B. Jost,M. Kaballo,S. Kandybei,M. Karacson,T. M. Karbach,J. Keaveney,I. R. Kenyon,U. Kerzel,T. Ketel,A. Keune,B. Khanji,Y. M. Kim,M. Knecht,R. F. Koopman,P. Koppenburg,M. Korolev,A. Kozlinskiy,L. Kravchuk,K. Kreplin,M. Kreps,G. Krocker,P. Krokovny,F. Kruse,K. Kruzelecki,M. Kucharczyk,V. Kudryavtsev,T. Kvaratskheliya,V. N. La Thi,D. Lacarrere,G. Lafferty,A. Lai,D. Lambert,R. W. Lambert,E. Lanciotti,G. Lanfranchi,C. Langenbruch,T. Latham,C. Lazzeroni,R. Le Gac,J. van Leerdam,J.-P. Lees,R. Lefèvre,A. Leflat,J. Lefrançois,O. Leroy,T. Lesiak,L. Li,L. Li Gioi,M. Lieng,M. Liles,R. Lindner,C. Linn,B. Liu,G. Liu,J. von Loeben,J. H. Lopes,E. Lopez Asamar,H. Lu,J. Luisier,A. Mac Raighne,F. Machefert,I. V. Machikhiliyan,F. Maciuc,O. Maev,J. Magnin,S. Malde,R. M. D. Mamunur,G. Manca,G. Mancinelli,N. Mangiafave,U. Marconi,R. Märki,J. Marks,G. Martellotti,A. Martens,L. Martin,A. Martín Sánchez,M. Martinelli,D. Martinez Santos,A. Massafferri,Z. Mathe,C. Matteuzzi,M. Matveev,E. Maurice,B. Maynard,A. Mazurov,G. McGregor,R. McNulty,M. Meissner,M. Merk,J. Merkel,S. Miglioranzi,D. A. Milanes,M.-N. Minard,J. Molina Rodriguez,S. Monteil,D. Moran,P. Morawski,R. Mountain,I. Mous,F. Muheim,K. Müller,R. Muresan,B. Muryn,B. Muster,J. Mylroie-Smith,P. Naik,T. Nakada,R. Nandakumar,I. Nasteva,M. Needham,N. Neufeld,A. D. Nguyen,C. Nguyen-Mau,M. Nicol,V. Niess,N. Nikitin,T. Nikodem,A. Nomerotski,A. Novoselov,A. Oblakowska-Mucha,V. Obraztsov,S. Oggero,S. Ogilvy,O. Okhrimenko,R. Oldeman,M. Orlandea,J. M. Otalora Goicochea,P. Owen,J. Palacios,A. Palano,M. Palutan,J. Panman,A. Papanestis,M. Pappagallo,C. Parkes,G. Passaleva,G. D. Patel,M. Patel,S. K. Paterson,G. N. Patrick,C. Patrignani,C. Pavel-Nicorescu,A. Pazos Alvarez,A. Pellegrino,G. Penso,M. Pepe Altarelli,S. Perazzini,D. L. Perego,E. Perez Trigo,A. Pérez-Calero Yzquierdo,P. Perret,M. Perrin-Terrin,G. Pessina,A. Petrolini,A. Phan,E. Picatoste Olloqui,B. Pie Valls,B. Pietrzyk,T. Pilař,D. Pinci,R. Plackett,S. Playfer,G. Polok,A. Poluektov,E. Polycarpo,D. Popov,B. Popovici,C. Potterat,A. Powell,J. Prisciandaro,V. Pugatch,A. Puig Navarro,W. Qian,J. H. Rademacker,B. Rakotomiaramanana,M. S. Rangel,I. Raniuk,G. Raven,S. Redford,M. M. Reid,A. C. dos Reis,S. Ricciardi,A. Richards,K. Rinnert,D. A. Roa Romero,P. Robbe,E. Rodrigues,F. Rodrigues,P. Rodriguez Perez,G. J. Rogers,S. Roiser,V. Romanovsky,M. Rosello,J. Rouvinet,T. Ruf,H. Ruiz,G. Sabatino,J. J. Saborido Silva,N. Sagidova,P. Sail,B. Saitta,C. Salzmann,M. Sannino,R. Santacesaria,C. Santamarina Rios,R. Santinelli,E. Santovetti,M. Sapunov,A. Sarti,C. Satriano,A. Satta,M. Savrie,D. Savrina,P. Schaack,M. Schiller,S. Schleich,M. Schlupp,M. Schmelling,B. Schmidt,O. Schneider,A. Schopper,R. Schwemmer,B. Sciascia,A. Sciubba,M. Seco,A. Semennikov,K. Senderowska,I. Sepp,N. Serra,J. Serrano,P. Seyfert,M. Shapkin,I. Shapoval,P. Shatalov,Y. Shcheglov,T. Shears,L. Shekhtman,A. Shires,R. Silva Coutinho,T. Skwarnicki,N. A. Smith

semanticscholar（2012）

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摘要

Article history: Received 4 May 2012 Received in revised form 26 May 2012 Accepted 29 May 2012 Available online 1 June 2012 Editor: L. Rolandi The Bs → J/ψ K 0 S branching fraction is measured in a data sample corresponding to 0.41 fb−1 of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin 2β measurement from B0 → J/ψ K 0 S . The time-integrated branching fraction is measured to be B(Bs → J/ψ K 0 S ) = (1.83 ± 0.28) × 10−5. This is the most precise measurement to date. © 2012 CERN. Published by Elsevier B.V. All rights reserved.

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