Femtoscopy of Strange Baryons in Heavy-ion Collisions at RHIC-STAR

TL;DR

This paper presents femtoscopy measurements of strange baryon correlations in heavy-ion collisions at RHIC, revealing attractive interactions and potential bound states, which inform the understanding of strong interactions and nuclear matter EoS.

Contribution

It provides new femtoscopic correlation results for extbackslash pXi{}, extbackslash LaLa{}, and extbackslash pOm{} pairs with high-statistics data from STAR, including source size and scattering parameters.

Findings

Attractive interaction observed in extbackslash pXi{} pairs.

Evidence of a bound state in extbackslash pOm{} pairs.

Centrality dependence of source size and scattering parameters extracted.

Abstract

Studying the final state interactions and finding possible bound states is helpful for understanding the strong interactions and comprehending the equation-of-state (EoS) of the nuclear matter. In these proceedings, we present recent femtoscopy results of \pXi{}, \LaLa{}, \pOm{} femtoscopic correlations with high statistics Isobar (Ru+Ru, Zr+Zr) and Au+Au collisions measured by the STAR experiment. For the \pXi{} and \pOm{} pairs, the centrality dependence of source size and the scattering parameters are extracted with the Lednick\'y-Lyuboshitz approach. The results show that there is an attractive interaction in \pXi{} pairs and a bound state in \pOm{} pairs.