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Jet momentum dependence of jet quenching in PbPb collisions at √s[subscript NN] = 2.76 TeV

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Jet momentum dependence of jet quenching in PbPb collisions at √s[subscript NN] = 2.76 TeV

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Author: Chatrchyan, S.; Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hammer, J.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Krammer, M.; Liko, D.; Mikulec, I.; Pernicka, M.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schöfbeck, R.; Strauss, J.; Taurok, A.; Teischinger, F.; Wagner, P.; Waltenberger, W. ... [more in full view]
Department: Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. School of Science
Publisher: Elsevier
Date Issued: 2012-04
Abstract:
Dijet production in PbPb collisions at a nucleon–nucleon center-of-mass energy of 2.76 TeV is studied with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 150 μb[superscript −1] is analyzed. Jets are reconstructed using combined information from tracking and calorimetry, using the anti-k[subscript T] algorithm with R=0.3. The dijet momentum balance and angular correlations are studied as a function of collision centrality and leading jet transverse momentum. For the most peripheral PbPb collisions, good agreement of the dijet momentum balance distributions with pp data and reference calculations at the same collision energy is found, while more central collisions show a strong imbalance of leading and subleading jet transverse momenta attributed to the jet-quenching effect. The dijets in central collisions are found to be more unbalanced than the reference, for leading jet transverse momenta up to the highest values studied.
URI: http://hdl.handle.net/1721.1/91941
ISSN: 03702693
Citation: Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Jet Momentum Dependence of Jet Quenching in PbPb Collisions at √s[subscript NN] = 2.76 TeV.” Physics Letters B 712, no. 3 (June 2012): 176–197. © 2012 CERN
Version: Final published version
Terms of Use: Creative Commons Attribution
Detailed Terms: http://creativecommons.org/licenses/by/3.0/
Published As: http://dx.doi.org/10.1016/j.physletb.2012.04.058
Journal: Physics Letters B

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