Investigation of hidden-charm pentaquarks with strangeness [Formula omitted]

Recently, a new hidden-charm pentaquark state [Formula omitted] was reported by the LHCb Collaboration. Stimulated by the fact that all hidden-charm pentaquark states in [Formula omitted] systems were successfully studied by the chiral quark model, we extended this study to the [Formula omitted] systems. All possible states with quantum numbers [Formula omitted], [Formula omitted], [Formula omitted], [Formula omitted], [Formula omitted] and [Formula omitted] have been investigated. The calculation results shows that the newly observed state [Formula omitted] can be explained as [Formula omitted] molecular state and the quantum numbers are [Formula omitted]. In addition, we also find other molecular states [Formula omitted], [Formula omitted] and [Formula omitted]. It is worth mentioning that [Formula omitted] can form a two-peak structure from states in system [Formula omitted] and [Formula omitted]. 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.