Measurement of the decays Bs0→J/ψφ(1020), Bs0→J/ ψf2′(1525) and Bs0→J/ψK+K- at Belle

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Title:	Measurement of the decays Bs0→J/ψφ(1020), Bs0→J/ ψf2′(1525) and Bs0→J/ψK+K- at Belle
Authors:	陳鎰鋒;Kim, D. Y.;Aushev, T.;Gabyshev, N.;Cheon, B. G.;Chen, A.;Hoshi, Y.;Mizuk, R.;Kim, J. B.;Bhuyan, B.;Bakich, A. M.;Shapkin, M.;Chang, M. C.;Chekelian, V.;Shen, C. P.;Kang, J. H.;Wang, C. H.;Wagner, M. N.;Rostomyan, A.;Nagasaka, Yasushi;Asner, D. M.;Simon, Frank;Hara, T.;Iwasaki, Y.;Itoh, R.;Križan, P.;Feindt, M.;Liu, Yueh-Feng;Hayashii, H.;Aihara, H.;Unno, Y.;Shibata, T. A.;Moll, A.;Adachi, I.;Ng, C.;Jaegle, I.;Piilonen, L. E.;Gaur, V.;Chistov, R.;Fast, James E.;Choi, S. K.;Tamponi, U.;Wang, P.;Zupanc, Anze;Urquijo, Phillip;Saito, T.;Sokolov, Andrey;Won, E.;Solovieva, E.;Kim, H. O.;Zhang, Z. P.;Tatishvili, G.;Schneider, O.;Nayak, M.;Bonvicini, G.;Natkaniec, Z.;Choi, Y.;Sevior, M. E.;Yuan, C. Z.;Starič, M.;Aulchenko, V.M.;Bala, A.;Ishikawa, A.;Krokovny, P.;Lee, Sang Hoon;Varner, G. S.;Park, H. K.;Hayasaka, K.;Sahoo, H.;Kato, E.;Golob, B.;Sakai, Y.;Cho, K.;Pakhlova, G.;Nakano, E.;Dutta, Dipanwita;Semmler, D.;Kah, D. H.;Park, H.;Petrič, Marko;Kiesling, C.;Goh, Y. M.;Uchida, M.;Wang, M. Z.;Iijima, T.;Klucar, J.;Okuno, S.;Doležal, Z.;Savinov, V.;Liu, C.;Kim, M. J.;Hou, W. S.;Ryu, Sunmin;Ritter, M.;Senyo, K.;Vahsen, S. E.;Chobanova, V.;Drásal, Z.;Julius, T.;Sohn, Y. S.;Thorne, F.
Contributors:	理學院物理學系
Date:	2013-12-02
Issue Date:	2026-04-23 12:13:25 (UTC+8)
Publisher:	American Physical Society;American Physical Society (APS)
Abstract:	摘要： 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. © 2013 American Physical Society. 出版者： American Physical Society (APS) 出版日期： 2013-12-02 出處： Physical Review D, 2013-12, Vol.88 識別號： ISSN: 1550-7998 識別號： EISSN: 1550-2368 識別號： DOI: 10.1103/physrevd.88.114006
Appears in Collections:	[Department of Physics] journal & Dissertation

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