# Levy HBT results at NA61/SHINE

## TL;DR

This paper reports on NA61/SHINE measurements of Bose-Einstein correlations of pions in Be+Be collisions at 150A GeV/c, analyzing Levy source parameters to understand the space-time structure of the particle-emitting source.

## Contribution

It introduces Levy distributed source modeling for Bose-Einstein correlations in high-energy nucleus collisions at this energy.

## Key findings

- Levy source parameters depend on transverse mass.
- Results suggest specific space-time emission characteristics.
- Data supports Levy distribution as a good source model.

## Abstract

Bose-Einstein (or HBT) momentum correlations reveal the space-time structure of the particle emitting source created in high energy nucleus-nucleus collisions. In this paper we present the latest NA61/SHINE measurements of Bose-Einstein correlations of identified pion pairs and their description based on Levy distributed sources in Be+Be collisions at 150A GeV/c. We investigate the transverse mass dependence of the Levy source parameters and discuss their possible interpretations.