Jet Production Rates in Association with W and Z Bosons in Pp Collisions at $ \sqrt {s}

Jet Production Rates in Association with W and Z Bosons in Pp Collisions at $ \sqrt {s}
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Book Synopsis Jet Production Rates in Association with W and Z Bosons in Pp Collisions at $ \sqrt {s} by :

Download or read book Jet Production Rates in Association with W and Z Bosons in Pp Collisions at $ \sqrt {s} written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 inverse picobarns. The study includes the measurement of the normalized inclusive rates of jets sigma(V +>= n jets)/sigma(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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