Performance of jet quenching measurements in pp and PbPb collisions with CMS at the HL-LHC

The projected performance of different jet measurements to be carried out with the large data samples expected in PbPb and pp collisions during the high-luminosity phase of the LHC (HL-LHC) is presented. The analyses are based on Monte Carlo simulations and extrapolations from data collected in pp and PbPb collisions between 2010 and 2016. The extrapolated performance for PbPb collisions, corresponding to an integrated luminosity of 10 nb$^{-1}$ at $\sqrt{s_{_\textrm{NN}}}=5.02$ TeV and an upgraded CMS detector, shows significant reductions in the uncertainties of the measurements of photon-tagged jet shapes and D$^0$-jet correlations. The large proton-proton data sample at $\sqrt{s}=14$ TeV, to be collected under low-pileup conditions in Run 3 and beyond, will also provide new opportunities for the study of jet quenching phenomena in small systems, as shown through $\gamma$, Z-jet transverse momentum imbalance distributions in high-multiplicity pp events.