Regular Article - Theoretical Physics
Investigation of hidden-charm pentaquarks with strangeness
Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, 210023, Nanjing, People’s Republic of China
Accepted: 21 January 2022
Published online: 7 February 2022
Recently, a new hidden-charm pentaquark state was reported by the LHCb Collaboration. Stimulated by the fact that all hidden-charm pentaquark states in systems were successfully studied by the chiral quark model, we extended this study to the systems. All possible states with quantum numbers , , , , and have been investigated. The calculation results shows that the newly observed state can be explained as molecular state and the quantum numbers are . In addition, we also find other molecular states , and . It is worth mentioning that can form a two-peak structure from states in system and . The decay width of all molecular states is given with the help of real scaling method. These hidden-charm pentaquark states is expected to be further verified in future experiments.
© The Author(s) 2022
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