Measurement of inclusive jet and dijet cross sections in proton-proton collision data at 7 TeV centre-of-mass energy using the ATLAS detector

Inclusive and dijet cross sections have been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider. These measurements were performed using the full 2010 dataset, consisting of a total integrated luminosity of 37.3 $pb^{-1}$. The anti-$k_{t}$ algorithm is used to identify jets with two jet radius parameters, $R$ = 0.4 and $R$ = 0.6. Inclusive single-jet differential cross sections are presented as a function of jet transverse momentum and rapidity. Dijet cross sections are studied as a function of the dijet invariant mass and maximum rapidity of the two leading jets. The dominant uncertainty on these cross sections comes from the jet energy scale uncertainty. In this analysis, we study jet transverse momenta from 20 GeV to 1.5 TeV in a rapidity range $|y|<4.4$, and dijet mass spectra from 60 GeV to 4.1 TeV within a rapidity of $|y|_{max}<2.8$ for the two leading jets. The data are compared to expectations based on next-to-leading order QCD corrected for non-perturbative effects. In addition to a validation of the theory in a new kinematic regime, the data also provides sensitivity to different parton distribution functions in a region where they are currently poorly constrained.