Interplay between core and corona from small to large systems

TL;DR

This paper investigates the roles of equilibrated and non-equilibrated components in high-energy collisions, revealing their significant influence on particle yields and correlations, which impacts understanding quark-gluon plasma properties.

Contribution

It introduces updated dynamical core--corona initialization framework (DCCI2) to analyze the interplay between core and corona in small and large collision systems.

Findings

Non-equilibrated components contribute significantly even in Pb+Pb collisions.

Non-equilibrated components influence $p_T$-integrated multi-particle correlations.

Results highlight the importance of non-equilibrated components in quark-gluon plasma studies.

Abstract

We present new results in $p$+$p$ and Pb+Pb collisions at the LHC energies from the updated dynamical core--corona initialization framework (DCCI2). The fractions of final hadron yields originating from equilibrated and non-equilibrated components are extracted as functions of multiplicity. We find that the contributions from non-equilibrated components are non-negligible even in Pb+Pb collisions and affect $p_T$-integrated multi-particle correlations. These suggest the importance of non-equilibrated components for the sophisticated extraction of properties of the quark gluon plasma from comparisons between dynamical frameworks and experimental data.