Studying the heavy quark spin symmetry multiplet of hadronic molecules D ¯ (∗) ςc (∗) in the three-body decays of D ¯ (∗) Λcπ

The decay behavior of an exotic state can be used to probe its internal structure. We note that the hidden-charm pentaquark states, PψN(4312), PψN(4440), and PψN(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 D¯(∗)ςc(∗). Our results show that the partial decay widths of the hidden-charm pentaquark molecules into D¯(∗)Λcπ are sizable so that D¯(∗)Λcπ are promising channels to search for them, which can help clarify their molecular nature.