Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-58814
CMS Collaboration, including the following authors; Chatrchyan, S; Amsler, C; Chiochia, V; Favaro, C; Verzetti, M; Snoek, H; De Visscher, S; Aguiló, E; Schmitt, A; Millan, B; Otyugova, P; Ivova, M; Storey, J (2011). Observation and studies of jet quenching in PbPb collisions at √sNN=2.76 TeV. Physical Review C, 84(2):024906 .
PDF (Version 2)
PDF (Version 1)
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.
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
©2011 CERN, for the CMS Collaboration
|Other titles:||Observation and studies of jet quenching in PbPb collisions at nucleon-nucleon center-of-mass energy = 2.76 TeV|
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Physics Institute|
|Deposited On:||12 Feb 2012 19:50|
|Last Modified:||01 May 2013 01:56|
|Publisher:||American Physical Society|
|ISSN:||0556-2813 (P) 1089-490X|
Users (please log in): suggest update or correction for this item
Repository Staff Only: item control page