Inclusive jet cross-sections and dijet azimuthal decorrelations with D0

摘要

We present a preliminary measurement of the inclusive jet cross-sectionsbased on an integrated luminosity of 378 pb^{-1} acquired with the D0 detectorbetween 2002 and 2004 at a center of mass energy of sqrt{s}=1.96 TeV and ameasurement of azimuthal dijet decorrelations based on an integrated luminosityof 150 pb^{-1}. The cross section measurements are based on an iterative conealgorithm with a cone size of R=0.7. They are performed in two rapidity binsbetween 0.0 and 0.8. The measurements are in good agreement with next toleading order calculations. The azimuthal angle between the two leading jets is sensitive to higher orderQCD effects. The measurement of dijet azimuthal decorrelations therefore probesthese effects without explicitly reconstructing more than two jets. Except for large azimuthal angles where soft effects are important themeasurements are well described by the next to leading order perturbationtheory.