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

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 2.7fb?1 from p¯p collisions at ?s=1.96TeV 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 ?t¯t=7.64±0.57(stat+syst)±0.45(luminosity)??pb.

Authorship: Aaltonen T., Álvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bauer G., Bedeschi F., Beecher D., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Binkley M.,

Fuente: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 84(3), 031101(R)

Publisher: American Physical Society

Publication date: 01/08/2011

No. of pages: 7

Publication type: Article

DOI: 10.1103/PhysRevD.84.031101

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Publication Url: https://doi.org/10.1103/PhysRevD.84.031101

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