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dc.contributor.authorThe ALICE Collaborationeng
dc.contributor.authorAamodt, K.eng
dc.contributor.authorAbel, N.eng
dc.contributor.authorAbeysekara, U.eng
dc.contributor.authorAlme, Johaneng
dc.contributor.authorBablok, Sebastian Roberteng
dc.contributor.authorFehlker, D.eng
dc.contributor.authorHaaland, Øystein Senneseteng
dc.contributor.authorHuang, M.eng
dc.contributor.authorLarsen, Dag Toppeeng
dc.contributor.authorNystrand, J.eng
dc.contributor.authorUllaland, K.eng
dc.contributor.authorØvrebekk, G.eng
dc.PublishedThe European Physical Journal C 68: 345-354en_US
dc.descriptionThere are 1056 authors. Only a few of them have been given the author entries in addition to the Collaborationen_US
dc.description.abstractThe pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy Ös=7s=7 TeV, were measured in the central pseudorapidity region |η|<1. Comparisons are made with previous measurements at Ös=0.9s=09 TeV and 2.36 TeV. At Ös=7s=7 TeV, for events with at least one charged particle in |η|<1, we obtain dNch/dh = 6.01±0.01(stat.)+0.20-0.12(syst.)dNchd=601001(stat)+020−012(syst). This corresponds to an increase of 57.6%±0.4%(stat.)+3.6-1.8%(syst.)576%04%(stat)+36−18%(syst) relative to collisions at 0.9 TeV, significantly higher than calculations from commonly used models. The multiplicity distribution at 7 TeV is described fairly well by the negative binomial distribution.en_US
dc.rightsAttribution-NonCommercial CC BY-NCeng
dc.titleCharged-particle multiplicity measurement in proton–proton collisions at √s = 7 TeV with ALICE at LHCen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCERN for the benefit of the ALICE collaboration 2010en_US
dc.rights.holderCopyright CERN for the benefit of the ALICE collaboration 2010. This article is published with open access at Springerlink.comen_US
dc.subject.nsiVDP::Mathematics and natural science: 400en_US

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