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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.authorAgrawal, Nikita
dc.contributor.authorAhammed, Zubayer
dc.contributor.authorAhmad, Shafiq F.
dc.contributor.authorAhn, Sang Un
dc.contributor.authorAiola, Salvatore
dc.contributor.authorAlme, Johan
dc.contributor.authorAltinpinar, Sedat
dc.contributor.authorDjuvsland, Øystein
dc.contributor.authorLønne, Per-Ivar
dc.contributor.authorNystrand, Joakim
dc.contributor.authorRehman, Attiq ur
dc.contributor.authorRøhrich, Dieter
dc.contributor.authorTambave, Ganesh Jagannath
dc.contributor.authorUllaland, Kjetil
dc.contributor.authorVelure, Arild
dc.contributor.authorWagner, Boris
dc.contributor.authorZhang, Hui
dc.contributor.authorZhou, Zhuo
dc.contributor.authorZhu, Hongsheng
dc.contributor.authorHelstrup, Håvard
dc.contributor.authorHetland, Kristin Fanebust
dc.contributor.authorKileng, Bjarte
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.authorAkindinov, Alexander
dc.contributor.authorAlam, Sk Noor
dc.contributor.authorDe Albuquerque, Danilo Silva
dc.contributor.authorAleksandrov, Dimitry
dc.contributor.authorAlessandro, Bruno
dc.contributor.authorAlexandre, Didier
dc.contributor.authorAlfaro Molina, José Rubén
dc.contributor.authorAlici, Andrea
dc.contributor.authorALICE, Collaboration
dc.date.accessioned2018-05-25T12:06:31Z
dc.date.available2018-05-25T12:06:31Z
dc.date.created2018-02-06T11:52:22Z
dc.date.issued2017
dc.identifier.citationPhysical Review C. 2017, 96:034904 (3), 1-18.nb_NO
dc.identifier.issn2469-9985
dc.identifier.urihttp://hdl.handle.net/11250/2499296
dc.description.abstractIn two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher-pT trigger particle. Measurements of these correlations as a function of pseudorapidity (_η) and azimuthal (_ϕ) differences are used to extract the centrality and pT dependence of the shape of the near-side peak in the pT range 1 < pT < 8 GeV/c in Pb-Pb and pp collisions at √sNN= 2.76 TeV. A combined fit of the near-side peak and long-range correlations is applied to the data and the peak shape is quantified by the variance of the distributions. While the width of the peak in the _ϕ direction is almost independent of centrality, a significant broadening in the _η direction is found from peripheral to central collisions. This feature is prominent for the low-pT region and vanishes above 4 GeV/c. The widths measured in peripheral collisions are equal to those in pp collisions in the _ϕ direction and above 3 GeV/c in the _η direction. Furthermore, for the 10% most central collisions and 1 < pT,assoc < 2 GeV/c, 1 < pT,trig < 3 GeV/c, a departure from a Gaussian shape is found: a depletion develops around the center of the peak. The results are compared to A Multi-Phase Transport (AMPT) model simulation as well as other theoretical calculations indicating that the broadening and the development of the depletion are connected to the strength of radial and longitudinal flow.nb_NO
dc.language.isoengnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/deed.no*
dc.titleEvolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at √sNN=2.76 TeVnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holder2017 CERN, for the ALICE Collaborationnb_NO
dc.subject.nsiVDP::Kjerne- og elementærpartikkelfysikk: 431nb_NO
dc.subject.nsiVDP::Nuclear and elementary particle physics: 431nb_NO
dc.source.pagenumber1-18nb_NO
dc.source.volume96:034904nb_NO
dc.source.journalPhysical Review Cnb_NO
dc.source.issue3nb_NO
dc.identifier.doi10.1103/PhysRevC.96.034904
dc.identifier.cristin1562339
cristin.unitcode222,58,4,0
cristin.unitnameInstitutt for mikrosystemer
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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