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

TL;DR

This paper investigates the proton-Omega correlation in high-energy heavy ion collisions to explore the existence of a spin-2 pΩ dibaryon, proposing a new correlation ratio to isolate strong interaction effects.

Contribution

It introduces a novel correlation function ratio, $C_{SL}(Q)$, to effectively extract the strong pΩ interaction from experimental data, minimizing Coulomb contamination.

Findings

Proposes $C_{SL}(Q)$ as a new observable for experimental analysis.

Links the correlation ratio to the potential existence of a pΩ dibaryon.

Discusses the relevance of this measure to experimental heavy-ion collision data.

Abstract

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