Measurements of Hard Probes with the ATLAS Detector

ATLAS will use its large acceptance, finely segmented calorimeters, its large acceptance silicon tracking system, and its extensive muon spectrometers to measure jets, photons, quarkonia, and global observables in Pb+Pb collisions. This talk presents a summary of the physics performance of ATLAS in measuring hard probes with a focus on jets and photons. Results are presented for jet reconstruction efficiency, energy resolution, and measurement of jet fragmentation observables. Results are also shown for di-jet measurements and for muon-tagged heavy flavor jets. The method for performing prompt photon measurements in Pb+Pb collisions is described, and performance results for measurements of prompt photon spectra and photon-jet correlations are shown.