Projections for ATLAS Measurements of Jet Modifications in Pb+Pb Collisions in LHC Runs 3 and 4

The primary goal of the heavy ion program at ATLAS is to study the properties of the deconfined, strongly interacting matter, the quark-gluon plasma (QGP). QCD jets are one of the primary tools used to study this matter. Jet properties are observed to be modified in Pb+Pb collisions compared to $pp$ collisions and the modifications are sensitive to the interactions between the QGP and the jet. Jet measurements in heavy ion collisions at ATLAS aim to provide information about the nature of these interactions. This note describes expected ATLAS measurements of jet modification in heavy-ion collisions in the upcoming LHC Runs 3 and 4. In particular, projections are made for inclusive jet yield measurements, jet fragmentation function measurements, and photon-tagged jet measurements.