UC Berkeley

Measurements of the yield and nuclear modification factor, R AA , for inclusive jet production are performed using 0.49 nb−1 of Pb+Pb data at s NN = 5.02 TeV and 25 pb−1 of pp data at s = 5.02 TeV with the ATLAS detector at the LHC. Jets are reconstructed with the anti- k t algorithm with radius parameter R = 0.4 and are measured over the transverse momentum range of 40–1000 GeV in six rapidity intervals covering | y | < 2.8 . The magnitude of R AA increases with increasing jet transverse momentum, reaching a value of approximately 0.6 at 1 TeV in the most central collisions. The magnitude of R AA also increases towards peripheral collisions. The value of R AA is independent of rapidity at low jet transverse momenta, but it is observed to decrease with increasing rapidity at high transverse momenta.