ATLAS High-pT measurements in lead-lead collisions at the LHC

Measurements of high-pT processes in lead-lead collisions can provide insight on the physics responsible for the quenching of jets in the quark gluon plasma. Results will be presented from ATLAS measurements of single jet suppression, both inclusively and as a function of the azimuthal angle of the jets with respect to the elliptic flow plane, single jet fragmentation, and boson-jet correlations. Theoretical comparisons to and implications of the results will be discussed. Also, results will be presented for measurements of photon, and Z production that provide essential tests on calculations of hard scattering rates and nuclear geometry.