Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at √sNN =2.76 TeV with the ATLAS Detector

ATLAS Collaboration

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Measurements of inclusive jet production are performed in pp and Pb+Pb collisions at sNN=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-kt algorithm with R=0.4, and the spectra are measured over the kinematic range of jet transverse momentum 32<pT<500 GeV and absolute rapidity |y|<2.1 and as a function of collision centrality. The nuclear modification factor RAA is evaluated, and jets are found to be suppressed by approximately a factor of 2 in central collisions compared to pp collisions. The RAA shows a slight increase with pT and no significant variation with rapidity.

Original languageEnglish
Article number072302
JournalPhysical Review Letters
Issue number7
StatePublished - 20 Feb 2015


FundersFunder number
Not addedST/N000420/1
National Science Foundation1119200, 1305037, 1506173
National Science Foundation
Seventh Framework Programme246806
Seventh Framework Programme
Science and Technology Facilities CouncilST/L001195/1, ST/J00474X/1, ST/M004821/1, ST/M002306/1, ST/J004928/1, ST/L003414/1, GRIDPP, ST/K001310/1, ST/L006464/1, ST/M503575/1, ST/J501074/1, ST/L003112/1, ST/J005525/1, ST/M001504/1, ST/K001248/1, ST/L003325/1, ST/I000178/1, ST/G50228X/1, ST/K001418/1, ST/K001302/1, ST/K001388/1, ST/K001329/1, ST/K50208X/1, ST/L001179/1, ST/I005803/1, ST/J004944/1, ST/M001407/1, ST/I006080/1, ST/L006480/1, ST/I000186/1, ST/M006980/1, ST/G502320/1, ST/M001733/1, PP/D002915/1, ST/M000664/1, ST/H00100X/1, ST/L000970/1, ST/H00100X/2, ST/K000705/1, ST/L003511/1, PP/E003087/1, ST/N000307/1, PP/E000355/1, ST/M001474/1, ST/I00372X/1, PP/E002846/1, ST/K003658/1, ST/J005487/1, ST/I006056/1, ST/M003213/1, PP/E000444/1, ST/K00137X/1, ST/N000277/1, ST/J005576/1
Science and Technology Facilities Council
Schweizerischer Nationalfonds zur F&#x00F6;rderung der Wissenschaftlichen Forschung156083, 149246
Schweizerischer Nationalfonds zur F&#x00F6;rderung der Wissenschaftlichen Forschung


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