Measurements of four-jet differential cross sections in $\sqrt{s} = 8$~TeV proton-proton collisions using the ATLAS detector

Differential cross sections for the production of at least four jets have been measured in proton--proton collisions at $\sqrt{s} = 8$ TeV at the Large Hadron Collider using the ATLAS detector. Events are selected if the four anti-$k_{t}$ $R=0.4$ jets with the largest transverse momentum ($p_{T}$) within the rapidity range $|y|<2.8$ are well separated ($\Delta R_{\text{4j}}^{\min}>0.65$), all have $p_{T}>64$ GeV, and include at least one jet with $p_{T}>100$ 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.