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 p (p) over bar collisions at root 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 sigma(t (t) over bar)= (7.64 +/- 0.57(stat + syst) +/- 0.45(luminosity)) pb.

T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Measurement of the top pair production cross section in the lepton+jets channel using a jet flavor discriminant. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(3), 031101-1-031101-7 [10.1103/PhysRevD.84.031101].

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

BARRIA, PATRIZIA;GAROSI, PAOLA;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
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 p (p) over bar collisions at root 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 sigma(t (t) over bar)= (7.64 +/- 0.57(stat + syst) +/- 0.45(luminosity)) pb.
T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Measurement of the top pair production cross section in the lepton+jets channel using a jet flavor discriminant. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(3), 031101-1-031101-7 [10.1103/PhysRevD.84.031101].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/21251
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