Energy and system dependence of nuclear modification factors of inclusive charged particles and identified light hadrons measured in p--Pb, Xe--Xe and Pb--Pb collisions with ALICE

TL;DR

This paper presents ALICE measurements of nuclear modification factors for charged particles and light hadrons across various collision systems at LHC energies, analyzing their dependence on system size, centrality, and multiplicity.

Contribution

It provides a comprehensive comparison of nuclear modification factors across different collision systems and evaluates model calculations against experimental data.

Findings

Nuclear modification factors vary with system size and centrality.

Results show suppression patterns consistent with energy loss models.

Comparison with models helps constrain theoretical descriptions.

Abstract

We report recent ALICE results on primary charged particle and neutral meson production in pp, p--Pb, Pb--Pb and Xe--Xe collisions at LHC energies. In this article, measurements of the nuclear modification factors $R_{\rm AA}$ of primary charged particles and of light neutral mesons in Pb--Pb, in Xe--Xe and in p--Pb collisions in a wide $p_{\rm T}$ range and different centrality classes are discussed. We compare the nuclear modification factors obtained for different collision systems as a function of transverse momentum, collision centrality as well as charged particle multiplicity (${\rm d}N_{\rm ch} / {\rm d}\eta$). We also present comparison of experimental results to model calculations.