B_((S))→J/ΨP(V)衰变分支比

Branching Ratio of B_((S))→J/ΨP(V)

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摘要在因子化框架下研究了B(S)→J/ΨP(V)(P(V)表示赝标量(矢量)介子)的衰变分支比.发现衰变分支比与威尔森系数、Cabibbo-Kobayashi-Maskawa(CKM)矩阵和有效参数有关,在选取的有效参数范围内,本文的结果包含了实验结果. Under the framework of the navie factorization, we have studied the branching ratios of B（（S））→J/ΨP（V） refer to the pseudoscalar （vector） meson）. We find that the branching ratio depends strongly on Wison coefficient, Cabibbo-Kobayashi-Maskawa （CKM） matrix elements and the effective parameter, Nc. Within the effective parameter, our results included the experimental results.

作者吕刚张丽英罗艳伟邹文亮

机构地区河南工业大学理学院

出处《河南师范大学学报（自然科学版）》 CAS 北大核心 2013年第1期36-39,共4页 Journal of Henan Normal University(Natural Science Edition)

基金国家自然科学基金(11147003 11047166) 河南工业大学高层次人才基金(2009BS028)

关键词 B介子衰变粒子衰变道分支比 B meson decays J/Ψ decay channel branching ratio

分类号 O572.33 [理学—粒子物理与原子核物理]

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B_((S))→J/ΨP(V)衰变分支比

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