Measuring hard probes in heavy ion collisions with ATLAS

This talk gives an overview of the latest hard process measurements in heavy-ion collision systems with the ATLAS detector at the LHC, utilizing the high statistics 5.02 TeV Pb+Pb data collected in 2015 and 2018. These include multiple measurements of jet production and structure, which probe the dynamics of the hot, dense Quark-Gluon Plasma formed in relativistic nucleus-nucleus collisions. New results sensitive to the role of color-charge, parton mass, and parton fragmentation on jet quenching will also be shown. Further, the single jet yields as a function of the azimuthal angle with respect to the 2nd, 3rd, and 4th event planes, and a new measurement of the dijet momentum balance will be discussed. The talk will also discuss new measurements of quarkonia and heavy flavor production to probe the QGP medium properties will be discussed. A particular focus of the measurements is the systematic comparison of fully unfolded data to state-of-the-art theoretical models.