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arXiv 1102.5399hep-phhep-ex
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探测$B_c$介子的非轻子两体衰变

Probing Non-leptonic Two-body Decays of $B_c$ meson

Hui-feng Fu, Yue Jiang, C. S. Kim, Guo-Li Wang

摘要:

利用低能有效哈密顿量计算了$B_c$的非轻子两体衰变的速率和CP不对称性。我们集中讨论了在末态中含有$0^-$和$1^-$ S波粒子和/或$0^+$和$1^+$ P波粒子的过程的$b$夸克衰变。Salpeter方法是原始Bethe-Salpeter方程的相对论瞬时近似,用于导出强子跃迁矩阵元。通过计算发现,观测CP破坏的最佳衰变道是$B_c^-\rightarrow η_c +D^-(D^{*-}_0)$,实验上需要约$\sim10^7$ $B_c$事例。衰变到$ η_c +D^{*-}(D_s^-), h_c+D^-(D^{*-})(D^{*-}_0), J/Ψ+D^{*-}$也是有希望的通道。

英文摘要:

Rates and CP asymmetries of the non-leptonic two-body decay of $B_c$ are calculated based on the low energy effective Hamiltonian. We concentrate on such $b$ quark decays of the processes with $0^-$ and $1^-$ S-wave particles and/or $0^+$ and $1^+$ P-wave particles in the final states. The Salpeter method, which is the relativistic instantaneous approximation of the original Bethe-Salpeter equation, is used to derive hadron transition matrix elements. Based on the calculation, it is found that the best decay channels to observe CP violation are $B_c^-\rightarrow η_c +D^-(D^{*-}_0)$, which need about $\sim10^7$ $B_c$ events in experiment. Decays to $ η_c +D^{*-}(D_s^-), h_c+D^-(D^{*-})(D^{*-}_0), J/Ψ+D^{*-}$ are also hopeful channels.

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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