Inspired by the recent evidence of $P_{ cs}(4459)$ reported by LHCb, we continue to perform the investigation of hidden-charm molecular pentaquarks with double strangeness, which are composed of an $S$-wave charmed baryon $\Xi_c^{ (\prime,*)}$ and an $S$-wave anti-charmed-strange meson $\bar{ D}_s^{ (*)}$. Both the $S$-$D$ wave mixing effect and the coupled channel effect are taken into account in realistic calculation. A dynamics calculation shows that there may exist two types of hidden-charm molecular pentaquark with double strangeness, i.e., the $\Xi_{ c}^{ *}\bar D_s^*$ molecular state with $J^P={ 5}/{ 2}^{ -}$ and the $\Xi_{ c}^{ \prime}\bar D_s^*$ molecular state with $J^P={ 3}/{ 2}^{ -}$. According to this result, we strongly suggest the experimental exploration of hidden-charm molecular pentaquarks with double strangeness. Facing such opportunity, obviously the LHCb will have great potential to hunt for them, with the data accumulation at Run III and after High-Luminosity-LHC upgrade.
Categories: hep-ph hep-ex