Journal article
Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √sNN=2.76 TeV
The journal of high energy physics, Vol.2011(8), 141
08/01/2011
DOI: 10.1007/JHEP08(2011)141
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.
Details
- Title: Subtitle
- Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √sNN=2.76 TeV
- Creators
- Serguei Chatrchyan - Yerevan Physics InstituteLukas Bäni - ETH ZurichPierluigi BortignonLea CaminadaBruno CasalNicolas ChanonZhiling ChenSergio CittolinGünther DissertoriMichael DittmarJürg EugsterKlaus FreudenreichChristoph GrabWieland HintzPierre LecomteWerner LustermannCarmelo MarchicaPablo Martinez Ruiz Del ArbolPredrag MilenovicFilip MoortgatChristoph NägeliPascal NefFrancesca Nessi-TedaldiLuc Pape - ETH ZurichFelicitas PaussThomas PunzAndrea RizziFrédéric J RongaMarco RossiniLeonardo SalaAnn-Karin SanchezMarie-Christine SawleyAndrey StarodumovBenjamin StiegerMaiko TakahashiLudwig Tauscher - ETH ZurichAlessandro Thea - ETH ZurichKonstantinos TheofilatosDaniel TreilleChristina UrschelerRainer WallnyMatthias WeberLukas Wehrli - ETH ZurichJoanna WengCMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and AstronomyC. R Newsom (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2011(8), 141
- Publisher
- Springer
- DOI
- 10.1007/JHEP08(2011)141
- ISSN
- 1126-6708
- eISSN
- 1029-8479
- Language
- English
- Date published
- 08/01/2011
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199753602771
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