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Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at sqrt[s_{NN}]=2.76 TeV with the ATLAS Detector.

Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, O S and Abramowicz, H, et al. (2015) In Physical Review Letters 114(7).
Abstract
Measurements of inclusive jet production are performed in pp and Pb+Pb collisions at sqrt[s_{NN}]=2.76 TeV with the ATLAS detector at the LHC, corresponding to integrated luminosities of 4.0 and 0.14 nb^{-1}, respectively. The jets are identified with the anti-k_{t} algorithm with R=0.4, and the spectra are measured over the kinematic range of jet transverse momentum 32<p_{T}<500 GeV and absolute rapidity |y|<2.1 and as a function of collision centrality. The nuclear modification factor R_{AA} is evaluated, and jets are found to be suppressed by approximately a factor of 2 in central collisions compared to pp collisions. The R_{AA} shows a slight increase with p_{T} and no significant variation with rapidity.
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