Prediction of Pcc States in a Quark Model

Inspired by the observation of hidden-charm pentaquark P_c and P_cs states by the LHCb Collaboration, we explore the qqcc̅c (q = u or d) pentaquark systems in the quark delocalization color screening model. The interaction between baryons and mesons and the influence of channel coupling are studied in this work. Three compact qqcc̅c pentaquark states are obtained, whose masses are 5259 MeV with I(J^P) = 0(1/2^-), 5396 MeV with I(J^P) = 1(1/2^-), and 5465 MeV with I(J^P) = 1(3/2^-). Two molecular states are obtained, which are I(J^P) = 0(1/2^-) Λ_c J/ψ with 5367 MeV and I(J^P) = 0(5/2^-) Ξ_cc^* D̅^* with 5690 MeV. These predicted states may provide important information for future experimental search.