Hidden-charm molecular pentaquarks and their charm-strange partners

In the framework of one-pion-exchange (OPE) model, we study the hidden-charm and charm-strange molecular pentaquark systems composed of a heavy baryon (Σc,Σc⁎) and a vector meson (K¯⁎,D¯⁎), where the S-D mixing effect is considered in our calculation. Our result shows that the ΣcD¯⁎ molecular state with (I=1/2,JP=3/2−)(I=1/2,JP=3/2−) and the Σc⁎D¯⁎ molecular state with (I=1/2,JP=5/2−)(I=1/2,JP=5/2−) exist in the mass range of the observed Pc(4380)Pc(4380) and Pc(4450)Pc(4450), respectively. Moreover, we predict two other hidden-charm molecular pentaquarks with configurations ΣcD¯⁎(I=3/2,JP=1/2−)(I=3/2,JP=1/2−) and Σc⁎D¯⁎(I=3/2,JP=1/2−)(I=3/2,JP=1/2−) and two charm-strange molecular pentaquarks Pcs(3340)Pcs(3340) and Pcs(3400)Pcs(3400) corresponding to the ΣcK¯⁎ configuration with (I=1/2,JP=3/2−)(I=1/2,JP=3/2−) and the Σc⁎K¯⁎ configuration with (I=1/2,JP=5/2−)(I=1/2,JP=5/2−), respectively. Additionally, we also predict some hidden-bottom Σb(⁎)B⁎ and BcBc-like Σc(⁎)B⁎/Σb(⁎)D¯⁎ pentaquarks.