Measurement of four-jet differential cross sections in √s=8 TeV proton-proton collisions using the ATLAS detector

Abstract

CERN-LHC. Differential cross sections for the production of at least four jets have been measured in proton--proton collisions at s√=8 TeV at the Large Hadron Collider using the ATLAS detector. Events are selected if the four anti-kt R=0.4 jets with the largest transverse momentum (pT) are well separated (dRmin4j>0.65), all have pT>64 GeV and rapidity |y|<2.8, and include at least one jet with pT>100 GeV. The dataset corresponds to an integrated luminosity of 20.3 fb−1. The cross sections, corrected for detector effects, are compared to leading-order and next-to-leading-order calculations as a function of the jet momenta, invariant masses, minimum and maximum opening angles and other kinematic variables.