Jet production rates in association with W and Z bosons in pp collisions at √s = 7 TeV
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Chatrchyan, S.; Brochero Cifuentes, Javier Andrés; Cabrillo Bartolomé, José Ibán; Calderón Tazón, Alicia; Chuang, S. H.; Duarte Campderros, Jorge; Felcini, Marta; Fernández García, Marcos; Gómez Gramuglio, Gervasio; González Sánchez, Francisco Javier; Jordá Lope, Clara; Lobelle Pardo, Patricia; López Virto, María Amparo; Marco de Lucas, Jesús; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, Francisco; Muñoz Sánchez, Francisca Javiela; Piedra Gómez, Jonatan; [et al.]Fecha
2012-01Derechos
Attribution-NonCommercial 4.0 International. ©CERN, for the benefit of the CMS collaboration
Publicado en
Journal of High Energy Physics, 2012, 2012(1), 10
Editorial
Springer Verlag
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Palabras clave
Hadron-hadron scattering
Resumen/Abstract
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 √ s = 7 TeV, corresponding to an integrated luminosity of 36 pb−1 . The study includes the measurement of the normalized inclusive rates of jets σ(V+ ≥ n jets)/σ(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 scaling at √ 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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