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dc.contributor.authorAdam, Jaroslav
dc.contributor.authorAdamová, Dagmar
dc.contributor.authorAggarwal, Madan M.
dc.contributor.authorAglieri Rinella, Gianluca
dc.contributor.authorAgnello, Michelangelo
dc.contributor.authorAgostinelli, Andrea
dc.contributor.authorAgrawal, Nikita
dc.contributor.authorAhammed, Zubayer
dc.contributor.authorAhmed, Ijaz
dc.contributor.authorAhn, Sang Un
dc.contributor.authorAlme, Johan
dc.contributor.authorErdal, Hege Austrheim
dc.contributor.authorHelstrup, Håvard
dc.contributor.authorHetland, Kristin Fanebust
dc.contributor.authorKileng, Bjarte
dc.contributor.authorAltinpinar, Sedat
dc.contributor.authorDjuvsland, Øystein
dc.contributor.authorHaaland, Øystein Senneset
dc.contributor.authorHuang, Meidana
dc.contributor.authorLønne, Per-Ivar
dc.contributor.authorNystrand, Joakim
dc.contributor.authorRehman, Attiq ur
dc.contributor.authorRøhrich, Dieter
dc.contributor.authorSkjerdal, Kyrre
dc.contributor.authorUllaland, Kjetil
dc.contributor.authorVelure, Arild
dc.contributor.authorWagner, Boris
dc.contributor.authorZhou, Zhuo
dc.contributor.authorArsene, Ionut Christian
dc.contributor.authorBätzing, Paul Christoph
dc.contributor.authorDordic, Olja
dc.contributor.authorLindal, Svein
dc.contributor.authorMahmood, Sohail Musa
dc.contributor.authorMilosevic, Jovan
dc.contributor.authorQvigstad, Henrik
dc.contributor.authorRichter, Matthias
dc.contributor.authorRøed, Ketil
dc.contributor.authorSkaali, Toralf Bernhard
dc.contributor.authorTveter, Trine Spedstad
dc.contributor.authorWikne, Jon Christopher
dc.contributor.authorZhao, Chengxin
dc.contributor.authorLangøy, Rune
dc.contributor.authorLien, Jørgen
dc.contributor.authorAimo, Ilaria
dc.contributor.authorAiola, Salvatore
dc.contributor.authorAjaz, Muhammad
dc.contributor.authorAkindinov, Alexander
dc.contributor.authorAlam, Sk Noor
dc.contributor.authorAleksandrov, Dimitry
dc.contributor.authorAlessandro, Bruno
dc.contributor.authorALICE, Collaboration
dc.date.accessioned2018-03-07T09:31:43Z
dc.date.available2018-03-07T09:31:43Z
dc.date.created2015-08-17T11:53:28Z
dc.date.issued2015
dc.identifier.citationPhysical Review C 91, 064905nb_NO
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/11250/2489069
dc.description.abstractWe report measurements of the primary charged-particle pseudorapidity density and transverse momentum distributions in p-Pb collisions at √sNN = 5.02 TeV and investigate their correlation with experimental observables sensitive to the centrality of the collision. Centrality classes are defined by using different event-activity estimators, i.e., charged-particle multiplicities measured in three different pseudorapidity regions as well as the energy measured at beam rapidity (zero degree). The procedures to determine the centrality, quantified by the number of participants (Npart) or the number of nucleon-nucleon binary collisions (Ncoll) are described.We show that, in contrast to Pb-Pb collisions, in p-Pb collisions large multiplicity fluctuations together with the small range of participants available generate a dynamical bias in centrality classes based on particle multiplicity. We propose to use the zero-degree energy, which we expect not to introduce a dynamical bias, as an alternative event-centrality estimator. Based on zero-degree energy-centrality classes, the Npart dependence of particle production is studied. Under the assumption that the multiplicity measured in the Pb-going rapidity region scales with the number of Pb participants, an approximate independence of the multiplicity per participating nucleon measured at mid-rapidity of the number of participating nucleons is observed. Furthermore, at high-pT the p-Pb spectra are found to be consistent with the pp spectra scaled by Ncoll for all centrality classes. Our results represent valuable input for the study of the event-activity dependence of hard probes in p-Pb collisions and, hence, help to establish baselines for the interpretation of the Pb-Pb data.nb_NO
dc.language.isoengnb_NO
dc.rightsNavngivelse 3.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/deed.no*
dc.titleCentrality dependence of particle production in p-Pb collisions at √SNN =5.02 TeVnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holderCERN for the benefit of the ALICE collaboration
dc.subject.nsiVDP::Kjerne- og elementærpartikkelfysikk: 431nb_NO
dc.subject.nsiVDP::Nuclear and elementary particle physics: 431nb_NO
dc.source.volume91:064905nb_NO
dc.source.journalPhysical Review Cnb_NO
dc.source.issue6nb_NO
dc.identifier.doi10.1103/PhysRevC.91.064905
dc.identifier.cristin1258333
dc.relation.projectNorges forskningsråd: 217288nb_NO
cristin.unitcode222,58,4,0
cristin.unitnameInstitutt for mikrosystemer
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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