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arXiv 0911.0972hep-ph
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用微扰QCD方法研究B_{c} \to J/J衰变

Study of B_{c}\to J/ψK decays in the perturbative QCD approach

Xian-Qiao Yu, Xiu-Li Zhou

摘要:

本文在基于k_T分解的微扰QCD方法框架下计算了B_c \to J/J_K的分支比。这种衰减只能通过标准模型中的树级图发生。我们发现B_c \to J/PDMATHABK的分支比约为(1-3)\times 10^{-4}。大的分支比和清晰的末态信号使得在LHC-b实验中很容易测量B_c \to J/J_c K。

英文摘要:

In this note, we calculate the branching ratio of B_c\to J/ψK in the framework of perturbative QCD approach based on k_T factorization. This decay can occur only via tree level diagrams in the Standard Model. We find that the branching ratio of B_c\to J/ψK is about (1-3)\times10^{-4}. The large branching ratio and the clear signals of the final states make the measurement of B_c\to J/ψK easily at LHC-b experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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