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Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √s<inf>NN</inf> = 5.02 TeV with the ATLAS detector

Aad, G.
•
Abajyan, T.
•
Abbott, B.
altro
GIORDANI, Mario
2016
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 (Formula presented.) b (Formula presented.) of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of (Formula presented.) (Formula presented.) using the ATLAS detector at the Large Hadron Collider. Charged particles with absolute pseudorapidity less than 2.7 are reconstructed using the ATLAS pixel detector. The p + Pb collision centrality is characterised by the total transverse energy measured in the Pb-going direction of the forward calorimeter. The charged-particle pseudorapidity distributions are found to vary strongly with centrality, with an increasing asymmetry between the proton-going and Pb-going directions as the collisions become more central. Three different estimations of the number of nucleons participating in the p + Pb collision have been carried out using the Glauber model as well as two Glauber–Gribov inspired extensions to the Glauber model. Charged-particle multiplicities per participant pair are found to vary differently for these three models, highlighting the importance of including colour fluctuations in nucleon–nucleon collisions in the modelling of the initial state of p + Pb collisions. © 2016, The Author(s).
DOI
10.1140/epjc/s10052-016-4002-3
WOS
WOS:000375306400002
Archivio
http://hdl.handle.net/11390/1097283
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84964402889
http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-016-4002-3
Diritti
metadata only access
Soggetti
  • TRANSVERSE-MOMENTUM D...

  • HIGH-ENERGY

  • MULTIPARTICLE PRODUCT...

  • NUCLEUS COLLISIONS

  • ANGULAR-CORRELATIONS

  • JET PRODUCTION

  • PB COLLISIONS

  • LONG-RANGE

  • LHC

  • MULTIPLICITY

Scopus© citazioni
47
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
55
Data di acquisizione
Mar 28, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
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