Measurement of the WW plus WZ production cross section using a matrix element technique in lepton plus jets events
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Measurement of the WW þ WZ production cross section using a matrix element technique in lepton þ jets events We present a measurement of the WW þ 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 À1 of integrated luminosity at ffiffi ffi s p ¼ 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 þ WZ cross section is measured to be 17:4 AE 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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تاریخ انتشار 2010