Bose-Einstein correlations of two identical particles through their first measurements by CMS at the LHC

TL;DR

This paper introduces a new two-particle correlation function measured by CMS at the LHC, which provides insights into the space-time characteristics of the pion emission source, including its size and temperature.

Contribution

It presents the first measurement of a correlation function that probes the space-time structure of pion emission sources in high-energy collisions.

Findings

Correlation function reflects the chaotic nature of the source

Measurement suggests the source size and temperature can be inferred

External forces influence the particle emission process

Abstract

We look at the new two-particle correlation function that can provide the space-time information about the source of two charged pions. This function clearly reflects the chaotic and incoherent nature of the particle emission source disturbed by external forces (fields). We argue that such an investiga- tion could probe the size and the temperature of the expanded source where two pions are emitted in thermal environment.