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Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √sNN = 5.02 TeV

Adam, J.
•
Adamová, D.
•
Aggarwal, M. M.
altro
Zyzak, M.
2016
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
The pseudorapidity density of charged particles, dNch=dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sNN 1⁄4 5.02 TeV. For the 5% most central collisions, we measure a value of 1943 +/- 54. The rise in dNch=dη as a function of sNN is steeper than that observed in proton-proton collisions and follows the trend established by measurements at lower energy. The increase of dNch=dη as a function of the average number of participant nucleons, hNparti, calculated in a Glauber model, is compared with the previous measurement at sNN 1⁄4 2.76 TeV. A constant factor of about 1.2 describes the increase in dNch=dη from sNN 1⁄4 2.76 to 5.02 TeV for all centrality classes, within the measured range of 0%–80% centrality. The results are also compared to models based on different mechanisms for particle production in nuclear collisions.
DOI
10.1103/PhysRevLett.116.222302
WOS
WOS:000377021200003
Archivio
http://hdl.handle.net/11368/2879981
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84973438953
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.222302
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/3.0/it/
FVG url
https://arts.units.it/bitstream/11368/2879981/2/PhysRevLett.116.222302.pdf
Soggetti
  • Physics and Astronomy...

Scopus© citazioni
162
Data di acquisizione
Jun 15, 2022
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Web of Science© citazioni
528
Data di acquisizione
Mar 19, 2024
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Data di acquisizione
Apr 19, 2024
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