Possible open charm molecular pentaquarks from ${\mathrm{\Lambda }}_c{K}^{(\ast )}\mathrm{/}{\mathrm{\Sigma }}_c{K}^{(\ast )}$ interactions

In this work, we adopt the one-boson-exchange model to study the $Y_c{K}^{(\ast )}(Y_c={\mathrm{\Lambda }}_c,{\mathrm{\Sigma }}_c)$ interactions. After considering both of the $S-D$ wave mixing effects and the coupled channel effects, we can predict several possible open-charm molecular pentaquarks, i.e., the single ${\mathrm{\Sigma }}_c{K}^{\ast }$ molecular states with $I(J^P)=1\mathrm{/}2(1\mathrm{/}{2}^{-})$, $1\mathrm{/}2(3\mathrm{/}{2}^{-})$ and $3\mathrm{/}2(1\mathrm{/}{2}^{-})$, the coupled ${\mathrm{\Lambda }}_c{K}^{\ast }\mathrm{/}{\mathrm{\Sigma }}_c{K}^{\ast }$ molecular states with $1\mathrm{/}2(1\mathrm{/}{2}^{-})$ and $1\mathrm{/}2(3\mathrm{/}{2}^{-})$, and the coupled ${\mathrm{\Sigma }}_{c}K\mathrm{/}{\mathrm{\Lambda }}_c{K}^{\ast }\mathrm{/}{\mathrm{\Sigma }}_c{K}^{\ast }$ molecular state with $1\mathrm{/}2(1\mathrm{/}{2}^{-})$. Meanwhile, we extend our study to the $Y_c{\bar{K}}^{(\ast )}$ interactions, our results suggest the ${\mathrm{\Sigma }}_c\bar{K}$ system with $I(J^P)=1\mathrm{/}2(1\mathrm{/}{2}^{-})$, the ${\mathrm{\Sigma }}_c{\bar{K}}^{\ast }$ systems with $1\mathrm{/}2(1\mathrm{/}{2}^{-})$, $1\mathrm{/}2(3\mathrm{/}{2}^{-})$, and $3\mathrm{/}2(3\mathrm{/}{2}^{-})$, the coupled ${\mathrm{\Lambda }}_c{\bar{K}}^{\ast }\mathrm{/}{\mathrm{\Sigma }}_c{\bar{K}}^{\ast }$ system with $1\mathrm{/}2(1\mathrm{/}{2}^{-})$, and the ${\mathrm{\Sigma }}_c\bar{K}\mathrm{/}{\mathrm{\Lambda }}_c{\bar{K}}^{\ast }\mathrm{/}{\mathrm{\Sigma }}_c{\bar{K}}^{\ast }$ system with $1\mathrm{/}2(1\mathrm{/}{2}^{-})$ can be the prime molecular candidates.