Adressing the p{\Omega}- interaction and di-baryonic states via femtoscopy

TL;DR

This paper uses femtoscopy data from ALICE and STAR to fine-tune a meson-exchange potential for the pΩ^- system, supporting the existence of a bound state and advancing understanding of strangeness hadron interactions.

Contribution

It introduces a data-driven method to refine the pΩ^- interaction potential using femtoscopy measurements, highlighting the potential for bound states in the strangeness sector.

Findings

Good agreement with measured correlation functions

Evidence supporting a bound state in the S_2 channel

The S_1 channel remains less constrained

Abstract

Motivated by recent experimental measurements of the p$\Omega^-$ correlation function and the concurrent theoretical efforts to describe the strong interaction among hadrons in the strangeness sector, we present a data-driven approach for fine tuning of a meson-exchanges potential for the p$\Omega^-$ system. Using femtoscopy data from the ALICE and STAR collaborations, we constrain the strength of the interaction, encoded in the tunable short-range parameter introduced in the potential. The resulting model provides a good description of the measured correlation functions and favors the existence of a bound state in the \({}^5S_2\) channel with a binding energy of approximately \(0.5\,\mathrm{MeV}\). The role of the \({}^3S_1\) channel, however, remains poorly constrained due to the absence of an accurate model accounting for its inelastic contributions.