Analysis of pPb collisions at LHC energies in the relativistic diffusion model

TL;DR

This paper uses the relativistic diffusion model to analyze particle production in pPb collisions at LHC energies, revealing the dominance of gluon-gluon sources and insights into statistical equilibration.

Contribution

It applies a three-source relativistic diffusion model to pPb collision data, providing new understanding of source contributions and equilibration at LHC energies.

Findings

Gluon-gluon source dominates particle production at all centralities.

The size of the midrapidity source varies with centrality and energy.

Insights into the statistical equilibration process in pPb collisions.

Abstract

Particle production sources in pPb collisions at LHC energies are investigated in pseudorapidity space as functions of centrality. The nonequilibrium-statistical relativistic diffusion model (RDM) with three sources is applied to the analysis of preliminary charged-hadron distributions measured by the ATLAS and ALICE collaborations in pPb collisions at 5.02 TeV. The size of the midrapidity source relative to the fragmentation sources in pPb collisions is considered as function of centrality, and incident energy. At LHC energies particle production from the mid-rapidity gluon-gluon source is larger than that from the fragmentation sources at all centralities. Conclusions regarding the statistical equilibration process are drawn.