In-medium modification of dijets in PbPb collisions at √sNN = 5.02 TeV

The CMS Collaboration

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1 Scopus citations

Abstract

Modifications to the distribution of charged particles with respect to high transverse momentum (pT) jets passing through a quark-gluon plasma are explored using the CMS detector. Back-to-back dijets are analyzed in lead-lead and proton-proton collisions at sNN = 5.02 TeV via correlations of charged particles in bins of relative pseudorapidity and angular distance from the leading and subleading jet axes. In comparing the lead-lead and proton-proton collision results, modifications to the charged-particle relative distance distribution and to the momentum distributions around the jet axis are found to depend on the dijet momentum balance xj , which is the ratio between the subleading and leading jet pT. For events with xj ≈ 1, these modifications are observed for both the leading and subleading jets. However, while subleading jets show significant modifications for events with a larger dijet momentum imbalance, much smaller modifications are found for the leading jets in these events. [Figure not available: see fulltext.]

Original languageEnglish (US)
Article number116
JournalJournal of High Energy Physics
Volume2021
Issue number5
DOIs
StatePublished - May 2021

Keywords

  • Hadron-Hadron scattering (experiments)
  • Jet physics
  • Quark gluon plasma

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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