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

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.; Bauer, Gerry P; Makhoul, Khaldoun
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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[superscript -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 σ[subscript tt̅] =7.64±0.57(stat+syst)±0.45(luminosity)  pb.
Date issued
2011-08
URI
http://hdl.handle.net/1721.1/69194
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aaltonen, T. et al. “Measurement of the Top Pair Production Cross Section in the Lepton+jets Channel Using a Jet Flavor Discriminant.” Physical Review D 84.3 (2011): n. pag. Web. 24 Feb. 2012. © 2011 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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