Approach to meson-baryon femtoscopy using effective field theories

TL;DR

This paper develops a method to calculate meson-baryon femtoscopy correlation functions in strangeness sectors using chiral perturbation theory combined with the TROY framework, relevant for LHC experiments.

Contribution

It introduces a novel approach combining chiral perturbation theory amplitudes with the TROY framework for meson-baryon femtoscopy analysis.

Findings

Calculated correlation functions for $\pi^+$p and $\pi^-$p channels.

Reproduced ALICE results for $K_S \Lambda$ correlations in PbPb collisions.

Provided a theoretical tool for analyzing femtoscopy data in strangeness sectors.

Abstract

We calculate several femtoscopy correlation functions in the strangeness sectors $S=0$ and $S=-2$ for meson-baryon interactions. We combine the amplitudes of chiral perturbation theory at leading order with the TROY (T-matrix-based Routine for HadrOn femtoscopY) framework. We consider the correlation function for the $\pi^+$p and $\pi^-$p channels, which are currently under analysis by the ALICE collaboration at the LHC. Furthermore, we will show that analogous interactions can be used to reproduce the results for $K_S \Lambda$ correlation functions obtained by ALICE collaboration in PbPb collisions.