Femtoscopy with L\'evy sources from SPS through RHIC to LHC

TL;DR

This paper reviews femtoscopy techniques using Lévystable source distributions to analyze the space-time structure of matter in ultra-relativistic collisions across SPS, RHIC, and LHC energies, highlighting recent experimental and phenomenological advances.

Contribution

It discusses the application of Lévystable distributions in femtoscopy, integrating recent experimental findings and phenomenological developments for better interpretation of collision data.

Findings

Lévy-stable shape effectively models emission distributions.

Experimental evidence supports Lévy source parametrization.

Advances improve understanding of collision geometry and dynamics.

Abstract

Femtoscopy is a unique tool to investigate the space-time geometry of the matter created in ultra-relativistic collisions. If the probability density distribution of hadron emission is parametrized, then the dependence of its parameters on particle momentum, collision energy, and collision geometry can be given. In recent years, several measurements came to light that indicated the adequacy of assuming a L\'evy-stable shape for the mentioned distribution. In parallel, several new phenomenological developments appeared, aiding the interpretation of the experimental results or providing tools for the measurements. In this paper, we discuss important aspects of femtoscopy with L\'evy sources in light of some of these advances, including phenomenological and experimental ones.