Publication
Title
Observation and studies of jet quenching in PbPb collisions at $\sqrt{S_{NN}}$ = 2.76 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
 Jet production in PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV was studied with the Compact Muon Solenoid (CMS) detector at the LHC, using a data sample corresponding to an integrated luminosity of 6.7 μb−1. Jets are reconstructed using the energy deposited in the CMS calorimeters and studied as a function of collision centrality. With increasing collision centrality, a striking imbalance in dijet transverse momentum is observed, consistent with jet quenching. The observed effect extends from the lower cutoff used in this study (jet pT=120 GeV/c) up to the statistical limit of the available data sample (jet pT≈210 GeV/c). Correlations of charged particle tracks with jets indicate that the momentum imbalance is accompanied by a softening of the fragmentation pattern of the second most energetic, away-side jet. The dijet momentum balance is recovered when integrating low transverse momentum particles distributed over a wide angular range relative to the direction of the away-side jet.
Language
English
Source (journal)
Physical review : C : nuclear physics. - Lancaster, Pa, 1970 - 2015
Publication
Lancaster, Pa : 2011
ISSN
0556-2813 [print]
1089-490X [online]
Volume/pages
84:2(2011), p. 1-26
Article Reference
024906
ISI
000293841600001
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address