Measurement of R = oldmathB(t→Wb)/B(t→Wq) in Top--quark--pair Decays using Lepton+jets Events and the Full CDF Run II Data set
(2013) Physical Review. D, Particles, Fields, Gravitation and Cosmology — Vol. 87, n° 11, p. 111101 (2013)
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- Abstract
- We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents quarks of type b, s, or d, in the final state with a lepton and hadronic jets. The measurement uses s√ = 1.96 TeV proton--antiproton collision data from 8.7 fb−1 of integrated luminosity collected with the Collider Detector at Fermilab during Run II of the Tevatron. We simultaneously measure R=0.94±0.09 (stat+syst), the tt¯ production cross section σtt¯=7.5±1.0 (stat+syst) pb. The magnitude of the Cabibbo-Kobayashi-Maskawa matrix element, |Vtb|=0.97±0.05 (stat+syst) is extracted assuming three generations of quarks, and a lower limit of |Vtb|>0.89 at 95% credibility level is set.
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Aaltonen, T., Vizan Garcia, J. M., The CDF Collaboration, & et al. (2013). Measurement of R = oldmathB(t→Wb)/B(t→Wq) in Top--quark--pair Decays using Lepton+jets Events and the Full CDF Run II Data set. Physical Review. D, Particles, Fields, Gravitation and Cosmology, 87(11), 111101. https://doi.org/10.1103/PhysRevD.87.111101 (Original work published 2013)