Possible strange hidden-charm pentaquarks from ${\Sigma }_c^{(\ast )}{\bar{D}}_s^{\ast }$ and ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{D}}^{\ast }$ interactions

Abstract

Using the one-boson-exchange model, we investigate the ${\Lambda }_c{\bar{D}}_s^{\ast }$, ${\Sigma }_c{\bar{D}}_s^{\ast }$, ${\Sigma }_c^{\ast }{\bar{D}}_s^{\ast }$, ${\Xi }_c{\bar{D}}^{\ast }$, ${\Xi }_c^{\prime }{\bar{D}}^{\ast }$, and ${\Xi }_c^{\ast }{\bar{D}}^{\ast }$ interactions by considering the one-eta-exchange and/or one-pion-exchange contributions. We further predict the existence of hidden-charm molecular pentaquarks. Promising candidates for hidden-charm molecular pentaquarks include a ${\Xi }_c^{\prime }{\bar{D}}^{\ast }$ state with $0({\frac{1}{2}}^{-})$ and the ${\Xi }_c^{\ast }{\bar{D}}^{\ast }$ states with $0({\frac{1}{2}}^{-})$ and $0({\frac{3}{2}}^{-})$. Experimental searches for these predicted hidden-charm molecular pentaquarks are an interesting future research topic for experiments like LHCb.

Comments: 8 pages,3 figures. To be published in Chinese Physics C