Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at √sNN = 2.76 TeV

CMS Collaboration

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Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta (pT) with respect to both the leading and subleading jet axes in high-pT dijet events. The contributions of charged particles in different momentum ranges to the overall event pT balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle pT. The results for PbPb collisions are compared to those in pp collisions using data collected in 2011 and 2013, at collision energy √sNN = 2.76TeV with integrated luminosities of 166 μb-1 and 5.3 pb-1, respectively, by the CMS experiment at the LHC. Measurements are presented as functions of PbPb collision centrality, charged-particle pT, relative azimuth, and radial distance from the jet axis for balanced and unbalanced dijets.
Original languageEnglish
Article number55
Number of pages43
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 2016
Externally publishedYes


  • Jet substructure
  • Heavy Ion Experiments
  • Heavy-ion collision
  • Quark gluon plasma

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