A model for gluon production in heavy-ion collisions at the LHC with rcBK unintegrated gluon densities

TL;DR

This paper presents a numerical model for gluon production in heavy-ion collisions at the LHC using rcBK unintegrated gluon densities, providing predictions for particle multiplicity and energy distributions.

Contribution

It introduces a computational implementation of k_t-factorization with rcBK gluon densities and applies it to Pb+Pb collisions at 2.75 TeV.

Findings

Predicted centrality dependence of charged particle multiplicity

Estimated transverse energy distributions

Provided initial conditions for hydrodynamic models

Abstract

This note is a physics manual for a recent numerical implementation of k_t-factorization with running-coupling BK unintegrated gluon distributions. We also compile some results for Pb+Pb collisions at \sqrt{s} = 2.75 TeV, such as predictions for the centrality dependence of the charged particle multiplicity and transverse energy. The model can further be used to obtain initial conditions for hydrodynamic simulations of A+A collisions at the LHC.