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arXiv 2008.07782hep-ph
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$X_{0}(2900)$和$X_1(2900)$的分子图像

Molecular picture for $X_{0}(2900)$ and $X_1(2900)$

Jun He, Dian-Yong Chen

备注：
5 pages, 2 figures; more discussions added; typos corrected
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摘要：

受LHCb实验中新观测到的$X_{0}(2900)$和$X_1(2900)$的启发，采用准势Bethe-Salpeter方程方法结合单玻色子交换模型研究了$K^*\bar{D}^*$和$K\bar{D}_1$相互作用.从相互作用的束缚态和虚态作为极点在散射振幅的复能量平面搜索。与$I(J^P)=0(0^+)$的结合态和与$0(1^-)$的虚态由$K^*\bar{D}^*$相互作用和$K\bar{D}_1$相互作用产生，并且可以分别与在LHCb观察到的$X_{0}(2900)$和$X_1(2900)$相关。结合态与$I(J^P)=0(1^+)$和一个虚拟的状态与$I(J^P)=0(2^+)$也预测从$K^*\bar{D}^*$相互作用与一个小的$α$值，这可以在未来的实验中搜索。

英文摘要：

Inspired by the newly observed $X_{0}(2900)$ and $X_1(2900)$ at LHCb, the $K^*\bar{D}^*$ and $K\bar{D}_1$ interactions are studied in the quasipotential Bethe-Salpeter equation approach combined with the one-boson-exchange model. The bound and virtual states from the interactions are searched for as the poles in the complex energy plane of scattering amplitude. A bound state with $I(J^P)=0(0^+)$ and a virtual state with $0(1^-)$ are produced from the $K^*\bar{D}^*$ interaction and $K\bar{D}_1$ interaction, and can be related to the $X_{0}(2900)$ and $X_1(2900)$ observed at LHCb, respectively. A bound state with $I(J^P)=0(1^+)$ and a virtual state with $I(J^P)=0(2^+)$ are also predicted from the $K^*\bar{D}^*$ interaction with a small $α$ value, which can be searched in future 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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