Jet shapes of isolated photon-tagged jets in PbPb and pp collisions at sNN-√= 5.02 TeV

The CMS Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

The modification of jet shapes in PbPb collisions, relative to those in pp collisions, is studied for jets associated with an isolated photon. The data were collected with the CMS detector at the LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. Jet shapes are constructed from charged particles with track transverse momenta (pT) above 1 GeV/c in annuli around the axes of jets with pjetT > 30 GeV/c associated with an isolated photon with pγT > 60 GeV/c. The jet shape distributions are consistent between peripheral PbPb and pp collisions, but are modified for more central PbPb collisions. In these central PbPb events, a larger fraction of the jet momentum is observed at larger distances from the jet axis compared to pp, reflecting the interaction between the partonic medium created in heavy ion collisions and the traversing partons.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2018 Sep 23

ASJC Scopus subject areas

  • General

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