# Jet momentum dependence of jet quenching in PbPb collisions at sqrt(sNN)=2.76 TeV

6 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
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 inverse microbarns is analyzed. Jets are reconstructed using combined information from tracking and calorimetry. 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 dijet momentum imbalance in central collisions is found to persist for leading jet transverse momenta up to the highest values studied.
Document type :
Journal articles
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http://hal.in2p3.fr/in2p3-00673208
Contributor : Sylvie Flores <>
Submitted on : Thursday, February 23, 2012 - 7:12:41 AM
Last modification on : Monday, May 17, 2021 - 10:29:13 AM

### Citation

S. Chatrchyan, D. Sillou, M. Besancon, S. Choudhury, M. Dejardin, et al.. Jet momentum dependence of jet quenching in PbPb collisions at sqrt(sNN)=2.76 TeV. Physics Letters B, Elsevier, 2012, 712, pp.176-197. ⟨10.1016/j.physletb.2012.04.058⟩. ⟨in2p3-00673208⟩

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