Hidden-charm molecular pentaquarks and their charm-strange partners

Abstract

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 $({\Sigma }_c,{\Sigma }_c^{\ast })$ 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 ${\Sigma }_c{\bar{D}}^{\ast }$ molecular state with $(I=1/2,J^P=3/2^{-})$ and the ${\Sigma }_c^{\ast }{\bar{D}}^{\ast }$ molecular state with $(I=1/2,J^P=5/2^{-})$ 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 ${\Sigma }_c{\bar{D}}^{\ast }$ $(I=3/2,J^P=1/2^{-})$ and ${\Sigma }_c^{\ast }{\bar{D}}^{\ast }$ $(I=3/2,J^P=1/2^{-})$ and two charm-strange molecular pentaquarks $P_{cs}(3340)$ and $P_{cs}(3400)$ corresponding to the ${\Sigma }_c{\bar{K}}^{\ast }$ configuration with $(I=1/2,J^P=3/2^{-})$ and the ${\Sigma }_c^{\ast }{\bar{K}}^{\ast }$ configuration with $(I=1/2,J^P=5/2^{-})$, respectively. Additionally, we also predict some hidden-bottom ${\Sigma }_b^{(\ast )}{B}^{\ast }$ and $B_c$-like ${\Sigma }_c^{(\ast )}{B}^{\ast }/{\Sigma }_b^{(\ast )}{\bar{D}}^{\ast }$ pentaquarks.

Invited paper for NPA special issue on Recent Progress in Strangeness and Charm Nuclear Physics. 23 pages, 3 figures and 7 tables. The version accepted by NPA

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Cited by in corpus (49)

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• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders
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