Improved measurement of CP-violation in B → (c(c)over-bar)K(*)0 decays

被引：0
|
作者：
Lange, DJ [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2005年 / 20卷 / 15期
关键词：
CP violation; B decays;
D O I：
10.1142/S0217751X05026881
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We present results on time-dependent CP asymmetries in neutral B decays. The amplitude of the CP asymmetry.. sin2 beta in the Standard Model, is derived from decay-time distributions from events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the other B meson is determined to be either a B-0 or (B) over bar (0) from its decay products. Using data collected by the BABAR detector at the PEP-H asymmetric-energy B Factory at SLAC, we measure sin2 beta = 0.722 +/- 0.040(stat) +/- 0.023(syst) and cos2 beta = 2.72(_0.79)(+050)(stat) +/- 0.27(syst), determining the sign of cos2 beta to be positive at 86% CL.
引用
收藏
页码：3522 / 3526
页数：5
相关论文
共 50 条
  • [21] Measurements of branching fractions and asymmetry parameters of Ξc0 → Λ(K)over-bar*0, Ξc0 → Σ0(K)over-bar*0, and Ξc0 → Σ+ K*- decays at Belle
    Jia, S.
    Tang, S. S.
    Shen, C. P.
    Adachi, I.
    Aihara, H.
    Al Said, S.
    Asner, D. M.
    Aulchenko, V.
    Aushev, T.
    Ayad, R.
    Babu, V.
    Bahinipati, S.
    Behera, P.
    Bennett, J.
    Bessner, M.
    Bilka, T.
    Biswal, J.
    Bobrov, A.
    Bonvicini, G.
    Bozek, A.
    Bracko, M.
    Browder, T. E.
    Campajola, M.
    Cervenkov, D.
    Chang, M. -C.
    Chekelian, V.
    Chen, A.
    Cheon, B. G.
    Chilikin, K.
    Cho, H. E.
    Cho, K.
    Cho, S. -J.
    Choi, S. -K.
    Choi, Y.
    Choudhury, S.
    Cinabro, D.
    Cunliffe, S.
    Das, S.
    De Nardo, G.
    Dhamija, R.
    Di Capua, F.
    Dolezal, Z.
    Dong, T. V.
    Eidelman, S.
    Epifanov, D.
    Ferber, T.
    Flood, K.
    Fulsom, B. G.
    Garg, R.
    Gaur, V.
    JOURNAL OF HIGH ENERGY PHYSICS, 2021, (06):
  • [22] CP violation in (B)over-bar0 → D*+μ-(v)over-barμ
    Bhattacharya, Bhubanjyoti
    Datta, Alakabha
    Kamali, Saeed
    London, David
    JOURNAL OF HIGH ENERGY PHYSICS, 2019, (05):
  • [23] Z→c(c)over-bar, b(b)over-bar decays and the aspon model
    Murakowski, JA
    PHYSICAL REVIEW D, 1998, 57 (05): : 3175 - 3177
  • [24] Measurement of CP asymmetries and polarisation fractions in Bs0 → K*0(K)over-bar*0 decays
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baesso, C.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Bel, L. J.
    Belogurov, S.
    Belyaev, I.
    Ben-Haim, E.
    JOURNAL OF HIGH ENERGY PHYSICS, 2015, (07):
  • [25] CP-violation, asymmetries and interferences in t(t)over-barφ
    Azevedo, Duarte
    Capucha, Rodrigo
    Onofre, Antonio
    Santos, Rui
    JOURNAL OF HIGH ENERGY PHYSICS, 2022, (09):
  • [26] Decays of Higgs bosons to b(b)over-bar, τ(τ)over-bar, and c(c)over-bar as signatures of supersymmetry and CP phases -: art. no. 015008
    Ibrahim, T
    Nath, P
    PHYSICAL REVIEW D, 2003, 68 (01)
  • [27] Study of (B)over-bar→Ξc(Λ)over-barc- and (B)over-bar→Λc+(Λ)over-barc-(K)over-bar decays at BABAR
    Aubert, B.
    Bona, M.
    Boutigny, D.
    Karyotakis, Y.
    Lees, J. P.
    Poireau, V.
    Prudent, X.
    Tisserand, V.
    Zghiche, A.
    Tico, J. Garra
    Grauges, E.
    Lopez, L.
    Palano, A.
    Pappagallo, M.
    Eigen, G.
    Stugu, B.
    Sun, L.
    Abrams, G. S.
    Battaglia, M.
    Brown, D. N.
    Button-Shafer, J.
    Cahn, R. N.
    Groysman, Y.
    Jacobsen, R. G.
    Kadyk, J. A.
    Kerth, L. T.
    Kolomensky, Yu. G.
    Kukartsev, G.
    Pegna, D. Lopes
    Lynch, G.
    Mir, L. M.
    Orimoto, T. J.
    Osipenkov, I. L.
    Ronan, M. T.
    Tackmann, K.
    Tanabe, T.
    Wenzel, W. A.
    del Amo Sanchez, P.
    Hawkes, C. M.
    Watson, A. T.
    Koch, H.
    Schroeder, T.
    Walker, D.
    Asgeirsson, D. J.
    Cuhadar-Donszelmann, T.
    Fulsom, B. G.
    Hearty, C.
    Mattison, T. S.
    McKenna, J. A.
    Barrett, M.
    PHYSICAL REVIEW D, 2008, 77 (03)
  • [28] Theoretical study of the Ω(2012) state in the Ωc0 → π+Ω(2012)- → π+ ((K)over-barΞ)- and π+ ((K)over-barΞπ)- decays
    Zeng, Chun-Hua
    Lu, Jun-Xu
    Wang, En
    Xie, Ju-Jun
    Geng, Li-Sheng
    PHYSICAL REVIEW D, 2020, 102 (07)
  • [29] Search for ηc decays into ππ and K(K)over-bar
    Ablikim, M.
    Bai, J. Z.
    Ban, Y.
    Bian, J. G.
    Cai, X.
    Chen, H. F.
    Chen, H. S.
    Chen, H. X.
    Chen, J. C.
    Chen, Jin
    Chen, Y. B.
    Chi, S. P.
    Chu, Y. P.
    Cui, Xx
    Dai, Y. S.
    Deng, Z. Y.
    Dong, L. Y.
    Dong, Q. F.
    Du, S. X.
    Du, Z. Z.
    Fang, J.
    Fang, S. S.
    Fu, C. D.
    Gao, C. S.
    Gao, Y. N.
    Gu, S. D.
    Gu, Y. T.
    Guo, Y. N.
    Guo, Y. Q.
    Guo, Z. J.
    Harris, F. A.
    He, K. L.
    He, M.
    Heng, Y. K.
    Hu, H. M.
    Hu, T.
    Huang, G. S.
    Huang, X. P.
    Huang, X. T.
    Ji, X. B.
    Jiang, X. S.
    Jiao, J. B.
    Jin, D. P.
    Jin, S.
    Jin, Yi
    Lai, Y. F.
    Li, G.
    Li, H. B.
    Li, H. H.
    Li, J.
    EUROPEAN PHYSICAL JOURNAL C, 2006, 45 (02): : 337 - 341
  • [30] Gluon splitting to c(c)over-bar and b(b)over-bar in hadronic Z0 decays:: Experimental results
    Schmitt, S
    HIGH ENERGY PHYSICS 99, PROCEEDINGS, 2000, : 645 - 647
12345