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dc.contributor.authorAad, Georgeseng
dc.contributor.authorBuanes, Trygveeng
dc.contributor.authorBurgess, Thomaseng
dc.contributor.authorEigen, Geraldeng
dc.contributor.authorJohansen, Lars Gimmestadeng
dc.contributor.authorKastanas, Alexeng
dc.contributor.authorLipniacka, Annaeng
dc.contributor.authorMohn, Bjarte Alsakereng
dc.contributor.authorØye, Ola Kristoffereng
dc.contributor.authorSandaker, Heidieng
dc.contributor.authorSjursen, Thereseeng
dc.contributor.authorStugu, Bjarneeng
dc.contributor.authorTonoyan, Arshakeng
dc.contributor.authorUgland, Mareneng
dc.contributor.authorZutshi, V.eng
dc.date.accessioned2015-10-29T13:56:48Z
dc.date.available2015-10-29T13:56:48Z
dc.date.issued2010-04
dc.identifier.issn0370-2693en_US
dc.identifier.urihttps://hdl.handle.net/1956/10618
dc.description.abstractThe first measurements from proton-proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity, and the relationship between mean transverse momentum and charged-particle multiplicity are measured for events with at least one charged particle in the kinematic range |eta|<2.5 and pT>500 MeV. The measurements are compared to Monte Carlo models of proton-proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity at eta = 0 is measured to be 1.333 +/- 0.003 (stat.) +/- 0.040 (syst.), which is 5-15% higher than the Monte Carlo models predict.en_US
dc.language.isoengeng
dc.publisherElsevieren_US
dc.rightsAttribution CC BY-NC-NDeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/eng
dc.subjectCharged-particleeng
dc.subjectMultiplicitieseng
dc.subject900 GeVeng
dc.subjectATLASeng
dc.subjectLHCeng
dc.subjectMinimum biaseng
dc.titleCharged-particle multiplicities in \(pp\) interactions at \(\sqrt{s}\) = 900 GeV measured with the ATLAS detector at the LHCen_US
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2014 CERN, for the ATLAS Collaborationen_US
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2010.03.064
dc.identifier.cristin828794
dc.source.journalPhysics Letters B
dc.source.40688
dc.source.141
dc.source.pagenumber21-42


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