TY - JOUR UR - http://dx.doi.org/10.1140/epjc/s10052-014-3168-9 TI - A measurement of the ratio of the production cross sections for W and Z bosons in association with jets with the ATLAS detector N2 - 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. Y1 - 2014/12// VL - 74 A1 - Collaboration, ATLAS ID - discovery10065726 N1 - Copyright information © CERN for the benefit of the ATLAS collaboration 2014 Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0 JF - The European Physical Journal C AV - public ER -