Filmer, E.K.Jackson, P.Kong, A.X.Y.Potti, H.Ruggeri, T.A.Ting, E.X.L.Çetin, Serkant Ali2024-05-192024-05-1920232469-9985https://doi.org/10.1103/PhysRevC.108.024906https://hdl.handle.net/20.500.12713/4513Measurements of the suppression and correlations of dijets is performed using 3 µ b ? 1 of Xe+Xe data at s N N = 5.44 TeV collected with the ATLAS detector at the CERN Large Hadron Collider. Dijets with jets reconstructed using the R = 0.4 anti- k t algorithm are measured differentially in jet p T over the range of 32 to 398 GeV and the centrality of the collisions. Significant dijet momentum imbalance is found in the most central Xe+Xe collisions, which decreases in more peripheral collisions. Results from the measurement of per-pair normalized and absolutely normalized dijet p T balance are compared with previous Pb + Pb measurements at s N N = 5.02 TeV. The differences between the dijet suppression in Xe+Xe and Pb + Pb are further quantified by the ratio of pair nuclear-modification factors. The results are found to be consistent with those measured in Pb + Pb data when compared in classes of the same event activity and when taking into account the difference between the center-of-mass energies of the initial parton scattering process in Xe+Xe and Pb + Pb collisions. These results should provide input for a better understanding of the role of energy density, system size, path length, and fluctuations in the parton energy loss. ©2023 CERN, for the ATLAS Collaboration.eninfo:eu-repo/semantics/openAccessArticle10822-s2.0-8517406237010.1103/PhysRevC.108.024906Q1