arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2109.02897hep-phhep-ex
收藏

重子$B$介子衰变

Baryonic $B$ meson decays

Xiaotao Huang, Yu-Kuo Hsiao, Jike Wang, Liang Sun

摘要:

本文综述了以双重子(${\bf B\bar B'}$)为末态的二体和三体重子$B$衰变。因此,我们总结了分支分数,角不对称性,和$CP$不对称性的实验数据。利用$W$ -玻色子湮灭(交换)机制,$B\to {\bf B \bf \bar B'}$的分支分数被证明是可解释的.在微扰QCD计数规则的方法中,我们研究了三体衰变通道。特别是,我们回顾了$B\to {\bf B\bar B'}M$的$CP$不对称性,这些不对称性有望通过LHCb和Belle~II实验测量。最后,我们指出了解释${\cal B}(B^-\to p\bar pρ^-)$和${\cal B}(B^-\to p\bar pμ^-\bar ν_μ)$的理论挑战。

英文摘要:

We review the two and three-body baryonic $B$ decays with the dibaryon (${\bf B\bar B'}$) as the final states. Accordingly, we summarize the experimental data of the branching fractions, angular asymmetries, and $CP$ asymmetries. Using the $W$-boson annihilation (exchange) mechanism, the branching fractions of $B\to {\bf B \bf \bar B'}$ are shown to be interpretable. In the approach of perturbative QCD counting rules, we study the three-body decay channels. In particular, we review the $CP$ asymmetries of $B\to {\bf B\bar B'}M$, which are promising to be measured by the LHCb and Belle~II experiments. Finally, we remark the theoretical challenges in interpreting ${\cal B}(B^-\to p\bar pρ^-)$ and ${\cal B}(B^-\to p\bar pμ^-\bar ν_μ)$.

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。

↑