Centrality and energy dependence of charged particles in p+A and A+A collisions from running coupling k_T-factorization

2018/11/19 by Adrian Dumitru, Dumitru, Adrian, A. Giannini +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · doi:10.48550/arxiv.1811.07696

openalex publication_date 2018/11/19 · openalex created_date 2018/11/29 · openalex updated_date 2026/07/28

Abstract

We extend the numerical analysis of the energy and centrality dependence of particle multiplicities at midrapidity in high-energy p+A and A+A collisions from a running coupling k_T-factorization formula made in~\citeDumitru:2018gjm by considering two unintegrated gluon distributions that were left out. While a good agreement with the experimental data in A+A collisions is achieved, improving the description of those observables in p+A collisions calls for a better understanding of the proton unintegrated gluon distribution at larger values of x and also the use of a realistic impact parameter dependence.

Citations

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

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