We present a new method to measure the top quark pair production cross section and the background rates with data corresponding to an integrated luminosity of 2.7  fb-1 from pp̅ collisions at √s=1.96  TeV collected with the CDF II Detector. We select events with a single electron or muon candidate, missing transverse energy, and at least one b-tagged jet. We perform a simultaneous fit to a jet flavor discriminant across nine samples defined by the number of jets and b tags. An advantage of this approach is that many systematic uncertainties are measured in situ and inversely scale with integrated luminosity. We measure a top cross section of σtt̅ =7.64±0.57(stat+syst)±0.45(luminosity)  pb.

Measurement of the top pair production cross section in the lepton+jets channel using a jet flavor discriminant

PAGLIARONE, Carmine Elvezio;
2011

Abstract

We present a new method to measure the top quark pair production cross section and the background rates with data corresponding to an integrated luminosity of 2.7  fb-1 from pp̅ collisions at √s=1.96  TeV collected with the CDF II Detector. We select events with a single electron or muon candidate, missing transverse energy, and at least one b-tagged jet. We perform a simultaneous fit to a jet flavor discriminant across nine samples defined by the number of jets and b tags. An advantage of this approach is that many systematic uncertainties are measured in situ and inversely scale with integrated luminosity. We measure a top cross section of σtt̅ =7.64±0.57(stat+syst)±0.45(luminosity)  pb.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11580/19496
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