A measurement of the ratio of the production cross sections for W and Z bosons in association with jets with the ATLAS detector


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Aad G., Abbott B., Abdallah J., Khalek S. A. , Abdinov O., Aben R., ...Daha Fazla

EUROPEAN PHYSICAL JOURNAL C, cilt.74, 2014 (SCI İndekslerine Giren Dergi) identifier identifier identifier

Özet

The ratio of the production cross sections for W and Z bosons in association with jets has been measured in proton-proton collisions at root s = 7 TeV with the ATLAS experiment at the Large Hadron Collider. The measurement is based on the entire 2011 dataset, corresponding to an integrated luminosity of 4.6 fb(-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 p(T) > 30 GeV and jet rapidity vertical bar y vertical bar < 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.