Probing Multi-Strange Dibaryon with Proton-Omega Correlation in High-energy Heavy Ion Collisions

Two-particle intensity correlation between the proton ($p$) and the Omega-baryon ($\mathrm{\Omega }$) in high-energy heavy ion collisions is studied to unravel the possible spin-2 $p\mathrm{\Omega }$ dibaryon recently suggested by lattice QCD simulations. The ratio of correlation functions between small and large collision systems, $C_{\mathrm{S}\mathrm{L}}(Q)$, is proposed to be a new measure to extract the strong $p\mathrm{\Omega }$ interaction without much contamination from the Coulomb attraction. Relevance of this quantity to the experimental observables in heavy-ion collisions is also discussed.