Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Omega$ mass spectrum via the QCD sum rules

Abstract

We explore the diquark-diquark-antiquark type $sssc\bar{c}$ pentaquark states with the isospin-spin-parity $I{J}^P=0{\frac{1}{2}}^{-}$, $0{\frac{3}{2}}^{-}$ and $0{\frac{5}{2}}^{-}$ via the QCD sum rules in details and obtain the ground state mass spectrum. And we suggest to hunt for these exotic states in the exclusive decay ${\Omega }_b^{-}\to P_{csss}^{-}\varphi \to J/\psi {\Omega }^{-}\varphi$. Observations of the $P_{csss}$ states would shed light on the nature of exotic states and provide an excellent opportunity to distinguish the diquark-diquark-antiquark type pentaquark states from meson-baryon type molecular states.

20 pages, 12 figures