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Measurements of the top-antitop production cross section at the Tevatron Run II CDF experiment using b-tagging

Henri Bachacou
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Abstract

We present measurements of the top-antitop production cross section in b-tagged lepton + jets events from proton-antiproton collisions at 1.96 TeV using the CDF detector at Fermilab. B-jets are tagged with either a secondary vertex algorithm, or a soft lepton tagger that identifies muons from B hadron semileptonic decays. With Tevatron Run II data, we estimate the top-antitop signal fraction in two different ways: by estimating the various background contributions, and by fitting directly the leading jet transverse energy spectrum for the signal and background contributions. A subset of the sample with two secondary vertex tagged jets yields a production cross section consistent with the inclusive measurements. Results are consistent with a Standard Model top-antitop signal and current measurements of the top quark mass.

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Henri Bachacou. 2005-01-05. Measurements of the top-antitop production cross section at the Tevatron Run II CDF experiment using b-tagging. https://doi.org/10.1142/s0217751x0502608x

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