Title
Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at <tex>$\sqrt{s_{NN}}$</tex> = 276 TeV Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at <tex>$\sqrt{s_{NN}}$</tex> = 276 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of high energy physics. - Bristol
Volume/pages
(2011) :8 , p. 1-34
ISSN
1126-6708
1029-8479
Article Reference
141
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76 TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dN ch /dη| η=0, for head-on collisions is found to be 1612 ± 55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/35723e/e93af6e3.pdf
E-info
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Handle