Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector

Abstract

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 $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV and 25 pb${}^{-1}$ of $pp$ data at $\sqrt{s}=5.02$ 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 $R_{\mathrm{AA}}$ 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.

36 pages in total, author list starting page 20, 8 figures, 2 tables, published in Phys. Lett. B. HEPData entry: https://www.hepdata.net/record/ins1673184 All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2017-10

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