Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$

Abstract

Inspired by the newly observed $P_{\psi s}^{\Lambda }(4338)$ and the reported $P_{cs}(4459)$, we indicate the existence of the molecular-type characteristic mass spectrum for hidden-charm pentaquark with strangeness. It shows that the $P_{cs}(4459)$ may contain two substructures corresponding to the ${\Xi }_c{\bar{D}}^{\ast }$ molecular states with $J^P=1/2^{-}$ and $3/2^{-}$, while there exists the corresponding ${\Xi }_c\bar{D}$ molecular state with $J^P=1/2^{-}$. As the prediction, we present another characteristic mass spectrum of the ${\Xi }_c^{\prime }{\bar{D}}^{(\ast )}$ molecular states. Experimental confirmation of these characteristic mass spectra is a crucial step of constructing hadronic molecular family.

Comments: 13 pages, 5 figures and 5 tables. More discussions added. Accepted by Phys. Lett. B