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arXiv 1607.02812hep-phhep-ex
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夸克模型中的激发底介子和底奇异介子

Excited bottom and bottom-strange mesons in the quark model

Qi-Fang Lü, Ting-Ting Pan, Yan-Yan Wang, En Wang, De-Min Li

备注：
12 pages, 3 figures, version accepted by Phys. Rev. D
发表信息：
Phys. Rev. D 94, 074012 (2016)
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摘要：

为了理解LHCb协作组最近报道的$B_J(5840)$和$B_J(5960)$的可能的$q\bar{q}$夸克模型分配，我们在非相对论夸克模型中计算了底介子和底奇介子的质量谱、强衰变和辐射衰变.将这些预测与相关实验结果进行比较，我们认为$B_J(5840)$和$B_J(5960)$可以分别被鉴定为$B(2^1S_0)$和$B(1^3D_3)$，CDF协作组报道的$B(5970)$可以被解释为$B(2^3S_1)$或$B(1^3D_3)$ .需要进一步精确测量$B(5970)$的宽度、自旋和衰变模式，以区分这两种分配。这些底介子和底奇异介子的预言可以为进一步的实验研究提供有用的信息。

英文摘要：

In order to understand the possible $q\bar{q}$ quark-model assignments of the $B_J(5840)$ and $B_J(5960)$ recently reported by the LHCb Collaboration, we evaluate mass spectra, strong decays, and radiative decays of bottom and bottom-strange mesons in a nonrelativistic quark model. Comparing these predictions with the relevant experimental results, we suggest that the $B_J(5840)$ and $B_J(5960)$ can be identified as the $B(2^1S_0)$ and $B(1^3D_3)$, respectively, and the $B(5970)$ reported by the CDF Collaboration can be interpreted as the $B(2^3S_1)$ or $B(1^3D_3)$. Further precise measurements of the width, spin and decay modes of the $B(5970)$ are needed to distinguish these two assignments. These predictions of bottom and bottom-strange mesons can provide useful information to further experimental investigations.

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