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arXiv · hep-ph/0208171

Precise determination of the Wtb couplings at LHC

F. del Aguila·J. A. Aguilar-Saavedra
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Abstract

Top pair production at LHC is the ideal place to search for nonstandard Wtb couplings in t -> W b -> l nu b decays. The lb forward-backward asymmetry in the W rest frame is very sensitive to sigma_{mu nu} couplings, and can spot one-loop QCD corrections to the decay vertex with more than 5 sigma statistical significance. We discuss the potential of this asymmetry to signal nonstandard gamma_mu and sigma_{mu nu} couplings and compare with top-antitop spin correlation asymmetries, which have a lower sensitivity. We also briefly summarise the results for Tevatron.

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F. del Aguila, J. A. Aguilar-Saavedra. 2002-11-08. Precise determination of the Wtb couplings at LHC. https://doi.org/10.1103/physrevd.67.014009

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