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Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Adomeit, Stefanie; Biebel, Otmar; Bortfeldt, Jonathan; Bock, Christopher; Calfayan, Philippe; Chow, Bonnie Kar Bo; Duckeck, Günter; Elmsheuser, Johannes; Hertenberger, Ralf; Hönig, Friedrich; Legger, Federica; Lorenz, Jeanette; Heller, C.; Mann, Alexander; Mehlhase, Sascha; Meineck, Christian; Mitrevski, Jovan; Nunnemann, Thomas; Rauscher, Felix; Ruschke, Alexander; Sanders, Michiel Paul; Schaile, Dorothee; Schieck, Jochen; Unverdorben, Christopher; Vladoiu, Dan-Nicolae; Walker, Rodney; Will, J. Z. (2014): A measurement of the ratio of the production cross sections for W and Z bosons in association with jets with the ATLAS detector. In: European Physical Journal C, Vol. 74, Nr. 12, 3168
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Abstract

The ratio of the production cross sections for W and Z bosons in association with jets has been measured in proton–proton collisions at s√=7TeV with the ATLAS experiment at the Large Hadron Collider. The measurement is based on the entire 2011 dataset, corresponding to an integrated luminosity of 4.6fb−1 . Inclusive and differential cross-section ratios for massive vector bosons decaying to electrons and muons are measured in association with jets with transverse momentum pT>30GeV and jet rapidity |y|<4.4 . The measurements are compared to next-to-leading-order perturbative QCD calculations and to predictions from different Monte Carlo generators implementing leading-order matrix elements supplemented by parton showers.