Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4997
Title: Observation and studies of jet quenching in PbPb collisions at ?sNN=2.76 TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: Particle correlations and fluctuations
Hadrons
High energy physics
Relativistic heavy ion collisions
Jet energy
Publisher: American Physical Society
Source: Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M.,...CMS Collaboration (2011). Observation and studies of jet quenching in PbPb collisions at √sNN=2.76 TeV. Physical Review C - Nuclear Physics, 84(2). doi:10.1103/PhysRevC.84.024906
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 6.7μb-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. © 2011 American Physical Society.
URI: http://doi.org/10.1103/PhysRevC.84.024906
http://hdl.handle.net/11147/4997
ISSN: 2469-9985
2469-9993
Appears in Collections:Physics / Fizik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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