| Direct CP violation in B(s)→J/ψP(V) |
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| 引用本文： | 吕刚,刘豪,郭新恒.Direct CP violation in B(s)→J/ψP(V)[J].中国物理 C,2012,36(7):585-591. |
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| 作者姓名： | 吕刚 刘豪 郭新恒 |
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| 作者单位： | 1. College of Science, Henan University of Technology, Zhengzhou 450001, China;;2. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China |
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| 基金项目： | Supported by National Natural Science Foundation of China (11147003, 11147197, 10975018, 11175020);Special Grants (2009BS028) for PH.D. from Henan University of Technology and Fundamental Research Funds for the Central Universities |
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| 摘 要： | In the framework of factorization, we study direct CP violation in the decays of B(s)→J/ψP(V) (P(V) refer to the pseudoscalar (vector) meson). The CP violation depends strongly on Cabibbo-Kobayashi- Maskawa (CKM) matrix elements and the effective parameter, Nc. The recent experimental data for the branching ratios of B(s)→J/ψP(V) are accurate enough and we can give a strong constraint on the range of Nc. We nd that the CP violating asymmetry is consistent with the available experiment values for the b→d transition, and a little smaller than the b→s transition. We also predict the CP violation of other decay channels for B(s)→J/ψP(V). We expect our results can give valuable guidance for experiments.
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| 关 键 词： | branching ratio Nc CP violation |
| 收稿时间： | 2011-12-2 |
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