Centrality dependence of charged-hadron pseudorapidity distributions in PbPb collisions at LHC energies in the RDM

TL;DR

This paper models the centrality dependence of charged-hadron pseudorapidity distributions in PbPb collisions at LHC energies using a nonequilibrium-statistical relativistic diffusion model, comparing predictions with experimental data and providing extrapolations for higher energies.

Contribution

It applies the relativistic diffusion model to analyze centrality dependence in heavy-ion collisions and refines predictions for future LHC energies.

Findings

Model successfully describes ALICE data at 2.76 TeV

Predictions for 5.52 TeV are provided

Comparison with previous RDM predictions shows consistency

Abstract

The centrality dependence of charged-hadron production in relativistic heavy-ion collisions at LHC energies is investigated in a nonequilibrium-statistical relativistic diffusion model (RDM) with three sources. Theoretical pseudorapidity distributions are compared with preliminary PbPb ALICE data at LHC energy of sqrt(s_NN) = 2.76 TeV for seven centralities, and a previous RDM prediction for this energy is confronted with the data. Refined predictions for 5.52 TeV PbPb based on RDM parameter extrapolations are presented.