ATLAS Measurements of Jet Cross-Sections

Jet cross sections have been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and angle. The measurements extend the previously measured kinematic region to higher rapidities, and to both higher and lower values of transverse momentum. The results are compared to next-to-leading-order QCD calculations matched to leading- logarithmic parton showers. In addition, measurements are presented of multijet cross sections, and of the azimuthal correlation between dijets, and of dijets separated by large intervals of rapidity where a veto is applied based on the presence of further jets with the rapidity interval. These measurements are sensitive to higher order QCD effects in new kinematic regimes.