Two-particle correlations in azimuthal angle and pseudorapidity in Be+Be

TL;DR

This paper presents the first measurements of two-particle correlations in pseudorapidity and azimuthal angle for Be+Be collisions at various energies, aiming to explore the phase diagram of strongly interacting matter.

Contribution

It provides novel two-particle correlation data for Be+Be interactions and compares these results with proton-proton collisions and EPOS model predictions.

Findings

Correlation patterns vary with collision energy.

Comparison shows agreement and differences with model predictions.

Results contribute to understanding the onset of deconfinement.

Abstract

The NA61/SHINE experiment aims to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. These goals are to be achieved by performing a two dimensional phase diagram $(T-\mu_B)$ scan by measurements of hadron production properties in proton-proton, proton-nucleus and nucleus-nucleus interactions as a function of collision energy and system size. In this contribution, the results on two-particle correlations in pseudorapidity and azimuthal angle will be presented for the first time for Be+Be interactions at beam momenta: 20, 30, 40, 75 and 150 GeV/c per nucleon. The NA61/SHINE results will be compared with the already presented results of proton-proton collisions at similar beam momenta as well as to the EPOS model results