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 $({\mathrm{\Sigma }}_c,{\mathrm{\Sigma }}_c^{\ast })$ and a vector meson $({\bar{K}}^{\ast },{\bar{D}}^{\ast })$, where the S-D mixing effect is considered in our calculation. Our result shows that the ${\mathrm{\Sigma }}_c{\bar{D}}^{\ast }$ molecular state with $(I=1\mathrm{/}2,J^P=3\mathrm{/}{2}^{-})$ and the ${\mathrm{\Sigma }}_c^{\ast }{\bar{D}}^{\ast }$ molecular state with $(I=1\mathrm{/}2,J^P=5\mathrm{/}{2}^{-})$ exist in the mass range of the observed $P_c(4380)$ and $P_c(4450)$, respectively. Moreover, we predict two other hidden-charm molecular pentaquarks with configurations ${\mathrm{\Sigma }}_c{\bar{D}}^{\ast }$ $(I=3\mathrm{/}2,J^P=1\mathrm{/}{2}^{-})$ and ${\mathrm{\Sigma }}_c^{\ast }{\bar{D}}^{\ast }$ $(I=3/2, J^P=1/2^-)$andtwocharm-strangemolecularpentaquarks$P_{cs}(3340)$and$P_{cs}(3400)$correspondingtothe$\Sigma_c\bar{K}^$configurationwith$(I=1/2, J^P=3/2^-)$andthe$\Sigma_c^\bar{K}^$configurationwith$(I=1/2, J^P=5/2^-)$,respectively\mathrm{.}Additionally,wealsopredictsomehidden-bottom$\Sigma_b^{()}B^$and$B_c$-like$\Sigma_c^{()}B^/\Sigma_b^{()}\bar{D}^*$ pentaquarks.