Measurement of the WW+WZ production cross section using a matrix element technique in lepton+jets events
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Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio





Fecha
2010-12-01Derechos
© 2010 The American Physical Society
Publicado en
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 82(11), 112001
Editorial
American Physical Society
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Resumen/Abstract
We present a measurement of the WW+WZ production cross section observed in a final state consisting of an identified electron or muon, two jets, and missing transverse energy. The measurement is carried out in a data sample corresponding to up to 4.6 fb-1 of integrated luminosity at √s=1.96 TeV collected by the CDF II detector. Matrix element calculations are used to separate the diboson signal from the large backgrounds. The WW+WZ cross section is measured to be 17.4±3.3 pb in agreement with standard model predictions. A fit to the dijet invariant mass spectrum yields a compatible cross section measurement.
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