Analysis of the hidden-charm pentaquark candidates in the $J/ψΩ$ 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 $IJ^{P}=0{\frac{1}{2}}^-$, $0{\frac{3}{2}}^-$ 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 $Ω_b^- \to P_{csss}^-ϕ\to J/ψΩ^- ϕ$. 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 and meson-baryon type molecular states.