Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV

Research output: Contribution to journalArticle

Bibtex

@article{58bdea9a69ff4809868dc2e62af471ae,
title = "Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV",
abstract = "We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21400±1300, while for the most peripheral (80–90%) we find 230±38. This corresponds to an increase of (27±4)% over the results at sNN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies. © 2017 The Author(s)",
author = "J. Adam and D. Adamova and M.M Aggarwal and {Aglieri Rinella}, G and M. Agnello and N Agrawal and Peter Christiansen and Martin Ljunggren and Anders Oskarsson and Tuva Richert and David Silvermyr and Evert Stenlund and Vytautas Vislavicius",
note = "Export Date: 31 July 2017",
year = "2017",
doi = "10.1016/j.physletb.2017.07.017",
volume = "772",
pages = "567--577",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}