Measurement of the decaysBs0→J/ψϕ(1020),Bs<…

F. Thörne,C. Schwanda,I. Adachi,H. Aihara,D. M. Asner,V. Aulchenko,T. Aushev,A. M. Bakich,A. Bala,B. Bhuyan,G. Bonvicini,M. Bračko,M. C. Chang,V. Chekelian,A. Chen,B. G. Cheon,K. Chilikin,R. Chistov,K. Cho,V. Chobanova,S. K. Choi,Y. Choi,D. Cinabro,J. Dalseno,Z. Doležal,Z. Drásal,D. Dutta,S. Eidelman,S. Esen,H. Farhat,J. E. Fast,M. Feindt,T. Ferber,V. Gaur,N. Gabyshev,R. Gillard,R. Glattauer,Y. M. Goh,B. Golob,J. Haba,T. Hara,K. Hayasaka,H. Hayashii,Y. Hoshi,W.-S. Hou,H. J. Hyun,T. Iijima,A. Ishikawa,R. Itoh,Y. Iwasaki,T. Iwashita,I. Jaeglé,T. Julius,D. H. Kah,J. H. Kang,E. Kato,C. Kiesling,D. Y. Kim,H. O. Kim,J. B. Kim,J. H. Kim,M. J. Kim,Y. J. Kim,J. Klucar,B. R. Ko,P. Kodyš,P. Križan,P. Krokovny,T. Kuhr,J. S. Lange,Soohyung Lee,J. Libby,C. Liu,Y. Liu,P. Lukin,D. Matvienko,H. Miyata,R. Mizuk,G. B. Mohanty,A. Moll,Takashi Mori,Y. Nagasaka,E. Nakano,M. Nakao,Z. Natkaniec,M. Nayak,C. R. Ng,S. Nishida,O. Nitoh,S. Okuno,C. Oswald,G. Pakhlova,H. Park,H. K. Park,R. Pestotnik,M. Petrič,L. E. Piilonen,M. T. Prim,M. Ritter,A. Rostomyan,S. Ryu,H. Sahoo,T. Saito,Y. Sakai,S. Sandilya,L. Šantelj,T. Sanuki,V. Savinov,O. Schneider,G. Schnell,D. Semmler,K. Senyo,M. E. Sevior,M. Shapkin,C. P. Shen,T. A. Shibata,J. G. Shiu,B. Shwartz,A. Sibidanov,F. Simon,Y. S. Sohn,A. Sokolov,E. Solovieva,S. Stanič,M. Starič,U. Tamponi,K. Tanida,G. Tatishvili,Y. Teramoto,M. Uchida,Y. Unno,S. Uno,P. Urquijo,S. Vahsen,G. Varner,K. E. Varvell,V. Vorobyev,M. N. Wagner,C. H. Wang,M. Z. Wang,P. Wang,X. L. Wang,Y. Watanabe,K. M. Williams,E. Won,J. Yamaoka,Y. Yamashita,S. Yashchenko,C. Z. Yuan,Z. P. Zhang,V. Zhilich,A. Zupanc

Physical review（2013）

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Abstract

We report a measurement of the branching fraction of the decay Bs0→J/ψϕ(1020), evidence and a branching fraction measurement for Bs0→J/ψf2′(1525), and the determination of the total Bs0→J/ψK+K− branching fraction, including the resonant and nonresonant contributions to the K+K− channel. We also determine the S-wave contribution within the ϕ(1020) mass region. The absolute branching fractions are B[Bs0→J/ψϕ(1020)]=(1.25±0.07(stat)±0.08(syst)±0.22(fs))×10−3, B[Bs0→J/ψf2′(1525)]=(0.26±0.06(stat)±0.02(syst)±0.05(fs))×10−3, and B[Bs0→J/ψK+K−]=(1.01±0.09(stat)±0.10(syst)±0.18(fs))×10−3, where the last systematic error is due to the branching fraction of bb¯→Bs(*)Bs(*). The branching fraction ratio is found to be B[Bs0→J/ψf2′(1525)]/B[Bs0→J/ψϕ(1020)]=(21.5±4.9(stat)±2.6(syst))%. All results are based on a 121.4 fb−1 data sample collected at the Υ(5S) resonance by the Belle experiment at the KEKB asymmetric-energy e+e− collider.Received 3 September 2013DOI:https://doi.org/10.1103/PhysRevD.88.114006© 2013 American Physical Society

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