Search for the Strange Dibaryons with Baryon Correlations in Isobar Collisions at STAR

TL;DR

This study investigates strange dibaryons by analyzing baryon correlations in isobar collisions at STAR, providing insights into hyperon interactions and potential bound states involving strange quarks.

Contribution

It presents the first measurements of $p$-$ ext{Xi}^-$ and $p$-$ ext{Omega}^-$ correlation functions in isobar collisions, using the Lednicky-Lyuboshitz formalism to explore strange dibaryon formation.

Findings

Scattering parameters suggest possible bound states for $H$ and $N ext{Omega}$ dibaryons.

Results provide constraints on hyperon-nucleon and hyperon-hyperon interactions.

Implications for the existence of strange dibaryons in high-energy collisions.

Abstract

Dibaryons provide insight into the strong interaction beyond conventional hadrons. Strange dibaryons, containing strange quarks, are especially valuable for probing hyperon-nucleon (YN) and hyperon-hyperon (YY) interactions. We report measurements of $p$-$\Xi^-$ and $p$-$\Omega^-$ correlation functions in Ru+Ru and Zr+Zr collisions at $\sqrt{s_{NN}} = 200$ GeV. The analysis, using the Lednicky-Lyuboshitz formalism, yields scattering parameters that offer key implications for the possible formation of strange dibaryon bound states, particularly $H$ ($S = -2$) and $N\Omega$ ($S = -3$).