“School of Particles%20And%20Accelerator”
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| Paper IPM / Particles%20And%20Accelerator / 12144 |
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Measurements of jet production rates in association with W and Z bosons for jet transverse momenta above 30 GeV are reported, using a sample of proton-proton collision
events recorded by CMS at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of 36 pb-1 . The study includes the measurement of the normalized inclusive rates of jets s(V+ n jets)/s(V), where V represents either a W or a Z. In addition, the ratio of W to Z cross sections and the W charge asymmetry as a function of the number of associated jets are measured. A test of Berends?Giele scaling at
sqrt(s) = 7 TeV is also presented. The measurements provide a stringent test of perturbative-QCD calculations and are sensitive to the possible presence of new physics. The results are in agreement with the predictions of a simulation that uses explicit matrix element calculations for final states with jets
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