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Measurement of the branching fraction and time-dependent CP asymmetry for B-0 -> J/psi pi(0) decays

Authors
Pal, B.Schwartz, A. J.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aulchenko, V.Aushev, T.Ayad, R.Badhrees, I.Bahinipati, S.Bansal, V.Behera, P.Beleno, C.Bhuyan, B.Bilka, T.Biswal, J.Bozek, A.Bracko, M.Cao, L.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Dash, N.Di Carlo, S.Dolezal, Z.Eidelman, S.Epifanov, D.Fast, J. E.Fulsom, B. G.Garg, R.Gaur, V.Garmash, A.Gelb, M.Giri, A.Goldenzweig, P.Golob, B.Guan, Y.Hara, T.Hayasaka, K.Hayashii, H.Higuchi, T.Hou, W. -S.Hsu, C. -L.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jia, S.Joffe, D.Julius, T.Karyan, G.Kim, D. Y.Kim, K. T.Kim, S. H.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kulasiri, R.Kumar, R.Kuzmin, A.Kwon, Y. -J.Lalwani, K.Lee, S. C.Li, L. K.Li, Y. B.Gioi, L. LiLibby, J.Lu, P. -C.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mori, T.Nakano, E.Nakao, M.Nath, K. J.Natkaniec, Z.Nayak, M.Nishida, S.Ogawa, S.Ono, H.Pakhlova, G.Pardi, S.Park, H.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, V.Prencipe, E.Purohit, M. V.Ritter, M.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Seon, O.Sevior, M. E.Shibata, T. -A.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tao, Y.Tenchini, F.Trabelsi, K.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Vahsen, S. E.Van Tonder, R.Varner, G.Varvell, K. E.Vorobyev, V.Wang, B.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Widmann, E.Won, E.Yelton, J.Yin, J. H.Zhang, Z. P.Zhilich, V.Zhukova, V.
Issue Date
19-12월-2018
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.98, no.11
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
98
Number
11
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/70881
DOI
10.1103/PhysRevD.98.112008
ISSN
2470-0010
Abstract
We measure the branching fraction and time-dependent CP-violating asymmetry for B-0 -> /psi pi(0) decays using a data sample of 711 fb(-1) collected on the Gamma(4S) resonance by the Belle experiment running at the KEKB e(+)e(-) collider. The branching fraction is measured to be B(B-0 -> /psi pi(0)) = [1.62 +/- 0.11(stat) +/- 0.06(syst)] x 10(-5), which is the most precise measurement to date. The measured CP asymmetry parameters are S = -0.59 +/- 0.19(stat) +/- 0.03 (syst) and A = 0.15 +/- 0.14(stat)(-0.03)(+0.04) (syst). The mixing-induced CP asymmetry (8) differs from the case of no CP V i lotion by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.
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