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

Aad, G. and Abbott, B. and Abdallah, J. and Abdinov, O. and Aben, R. and Krasznahorkay, Attila and Nagai, Yoshikazu and Pásztor, Gabriella and Tóth, József (2015) Measurement of four-jet differential cross sections in √s = 8 TeV proton–proton collisions using the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS (12). ISSN 1126-6708

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Abstract

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) within the rapidity range |y| < 2.8 are well separated (∆Rmin 4j > 0.65), all have pT > 64 GeV, 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.

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