Diffusion-model analysis of pPb and PbPb collisions at LHC energies

TL;DR

This paper uses a relativistic diffusion model to analyze charged hadron distributions in pPb and PbPb collisions at LHC energies, emphasizing the role of fragmentation sources and making predictions for future FCC energies.

Contribution

It introduces a three-source nonequilibrium-statistical model to describe pseudorapidity distributions, incorporating Jacobian transformation and limiting fragmentation.

Findings

Model successfully describes centrality dependence of distributions.

Predictions made for FCC energy collisions.

Highlights importance of fragmentation sources in modeling.

Abstract

We present an analysis of centrality-dependent pseudorapidity distributions of produced charged hadrons in pPb and PbPb collisions at the LHC energy of sqrt{s_NN}=5.02 TeV, and of minimum-bias pPb collisions at 8.16 TeV within the nonequilibrium-statistical relativistic diffusion model (RDM). In a three-source approach, the role of the fragmentation sources is emphasized. Together with the Jacobian transformation from rapidity to pseudorapidity and the limiting fragmentation conjecture, these are essential for modeling the centrality dependence. For central PbPb collisions, a prediction at the projected FCC energy of sqrt{s_NN}=39 TeV is made.