ALICE results on system-size dependence of charged-particle multiplicity density in p-Pb, Pb-Pb and Xe-Xe collisions
Abstract
Particle production at LHC energies involves the interplay of hard
(perturbative) and soft (non-perturbative) QCD processes. Global
observables, such as the charged-particle multiplicity, are related to
the initial geometry and the energy density produced in the collision.
They are important to characterise relativistic heavy-ion collisions and
to constrain model calculations. The LHC produced Xenon-Xenon collisions
for the first time in October 2017. New results on the primary
charged-particle pseudorapidity density, and its pseudorapidity and
centrality dependence are presented for this lighter and deformed
nucleus, and compared to measurements obtained for lead ions. New
results will also be presented for p-Pb collisions at the highest energy
of 8.16 TeV, as part of an overview of all the measurements at LHC Run 1
and 2 energies. These studies allow us to investigate the evolution of
particle production with energy and system size and to compare models
based on various particle production mechanisms and different initial
conditions.
Collections
DSpace@Karatay by Karatay University Institutional Repository is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License..