Where is the next pentaquark state?

A bstract The LHCb Collaboration has observed two types of hidden-charm pentaquark states PψN P ψ N and Pψ sΛ P ψs Λ since 2015. In this work, we predict two other types of hidden-charm pentaquark states Pψ sΣ P ψs Σ (4367) and Pψ ssN P ψss N (4379) within the framework of heavy pentaquark chiral perturbation theory. We suggest the LHCb Collaboration to observe Pψ ssN P ψss N (4379) 0 and Pψ ssN P ψss N (4379) − with J P = 1/2⁻ 1 2 − in the J / ψ Ξ spectrum through amplitude analyses of Ωb⁻ Ω b − → J / ψ Ξ 0 K − decays and B⁻→ J/ψ Ξ⁻Λ̄ B − → J / ψ Ξ − Λ ¯ decays.