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arXiv 2302.01696hep-ph
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在$B$和$B_s$衰变中寻找含奇异夸克的隐魅分子态

Hunting for the hidden-charm molecular states with strange quark in $B$ and $B_s$ decays

Qi Wu, Yan-Ke Chen, Gang Li, Shi-Dong Liu, Dian-Yong Chen

摘要:

本文利用有效拉格朗日方法研究了由$D^{(*)}_s \bar{D}^{(*)}$和$D^{(*)}_s \bar{D}^{(*)}_s$组成的分子态在$B$和$B_s$衰变中的产生.根据模型参数$α$和结合能$ΔE$估计了分支比。我们的估计表明,分支分数的顺序为$10^{-4}$和相对比例是非常弱的依赖于模型参数$α$和结合能$ΔE$。预测的比值有助于在Belle II和LHCb实验中寻找含奇异夸克的隐魅分子态。

英文摘要:

In the present work, we investigate the productions of the molecular states composed of $D^{(*)}_s \bar{D}^{(*)}$ and $D^{(*)}_s \bar{D}^{(*)}_s$ in the $B$ and $B_s$ decays by using an effective Lagrangian approach. The branching ratios in terms of the model parameter $α$ and the binding energy $ΔE$ are estimated. Our estimations indicate that the branching fractions are of the order of $10^{-4}$ and the relative ratios are very weakly dependent on the model parameter $α$ and the binding energy $ΔE$. The predicted ratios are helpful for searching the hidden-charm molecular states with strange quark in the future experiments at Belle II and LHCb.

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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