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dc.contributor.authorCMS Collaboration
Adair, A.
Akgun, B.
Ecklund, K.M.
Geurts, F.J.M.
Li, W.
Michlin, B.
Padley, B.P.
Redjimi, R.
Roberts, J.
Zabel, J. 2015-04-17T20:41:59Z 2015-04-17T20:41:59Z 2014
dc.identifier.citation CMS Collaboration, Adair, A., Akgun, B., et al.. "Modification of jet shapes in PbPb collisions at √SNN=2.76 TeV." Physics Letters B, 730, (2014) Elsevier: 243-263.
dc.description.abstract The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of Pb and pp collisions, corresponding to integrated luminosities of 150 μb−1 and 5.3 pb−1 respectively, were collected at a nucleon–nucleon centre-of-mass energy of √SNN=2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-kT algorithm with a distance parameter R=0.3, and the jet shapes are measured for charged particles with transverse momentum pT>1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions.
dc.language.iso eng
dc.publisher Elsevier
dc.rights Open access under CC BY license.
dc.title Modification of jet shapes in PbPb collisions at √SNN=2.76 TeV
dc.type Journal article
dc.citation.journalTitle Physics Letters B
heavy ion physics
jet shapes
dc.citation.volumeNumber 730
dc.type.dcmi Text
dc.type.publication publisher version
dc.citation.firstpage 243
dc.citation.lastpage 263

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Except where otherwise noted, this item's license is described as Open access under CC BY license.