Studying the heavy quark spin symmetry multiplet of hadronic molecules $\bar{D}^{(*)}Σ_c^{(*)}$ in the three-body decays of $\bar{D}^{(*)}Λ_c π$

Ming-Zhu Liu; Ya-Wen Pan; Li-Sheng Geng

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arXiv · 2407.17318

Studying the heavy quark spin symmetry multiplet of hadronic molecules $\bar{D}^{()}Σ_c^{()}$ in the three-body decays of $\bar{D}^{(*)}Λ_c π$

Ming-Zhu Liu·Ya-Wen Pan·Li-Sheng Geng

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Abstract

The decay behavior of an exotic state can be used to probe its internal structure. We note that the hidden-charm pentaquark states, $P_ψ^{N}(4312)$, $P_ψ^{N}(4440)$, and $P_ψ^{N}(4457)$, have only been observed in the $J/ψp$ channel. In this work, we employ the effective Lagrangian approach to systematically investigate the two-body and three-body decays of the heavy quark spin symmetry multiplet of hadronic molecules $\bar{D}^{(*)}Σ_c^{(*)}$. Our results show that the partial decay widths of the hidden-charm pentaquark molecules into $\bar{D}^{(*)}Λ_c π$ are sizable so that $\bar{D}^{(*)}Λ_c π$ are promising channels to search for them, which can help clarify their molecular nature.

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Ming-Zhu Liu, Ya-Wen Pan, Li-Sheng Geng. 2024-12-05. Studying the heavy quark spin symmetry multiplet of hadronic molecules $\bar{D}^{(*)}Σ_c^{(*)}$ in the three-body decays of $\bar{D}^{(*)}Λ_c π$. https://arxiv.org/abs/2407.17318

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