Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at with the ATLAS detector

Measurements of the yield and nuclear modification factor, ${R}_{\mathrm{AA}}$, for inclusive jet production are performed using 0.49 nb$^{−1}$ of Pb+Pb data at $\sqrt{{s}_{\mathrm{NN}}}=5.02\phantom{\rule{0.25em}{0ex}}\text{TeV}$ and 25 pb$^{−1}$ of pp data at $\sqrt{s}=5.02\phantom{\rule{0.25em}{0ex}}\text{TeV}$ with the ATLAS detector at the LHC. Jets are reconstructed with the $\text{anti-}{k}_{t}$ 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 ${R}_{\mathrm{AA}}$ increases with increasing jet transverse momentum, reaching a value of approximately 0.6 at 1 TeV in the most central collisions. The magnitude of ${R}_{\mathrm{AA}}$ also increases towards peripheral collisions. The value of ${R}_{\mathrm{AA}}$ is independent of rapidity at low jet transverse momenta, but it is observed to decrease with increasing rapidity at high transverse momenta.