Production of Jets and Photons at ATLAS

The measurement of the production of jets and photons in ATLAS will provide ideal tests of perturbative QCD in a kinematic regime never observed before. Gaining a precise quantitative understanding of perturbative QCD is essential to searches for new physics at the LHC. In addition, differential cross-section measurements of jet and photon production can be used to constrain parton density functions. The detection of jets and photons in ATLAS is achieved by using finely segmented calorimeters, which surround an inner tracking system enclosed in a 2T solenoid field.