Journal
PHYSICAL REVIEW D
Volume 67, Issue 1, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevD.67.014009
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Top pair production at the CERN LHC is the ideal place to search for nonstandard Wtb couplings in t-->Wb-->lnub decays. The lb forward-backward asymmetry in the W rest frame is very sensitive to sigma(munu) couplings, and can spot one-loop QCD corrections to the decay vertex with more than 5sigma statistical significance. We discuss the potential of this asymmetry to signal nonstandard gamma(mu) and sigma(munu) couplings and compare with t (t) over bar spin correlation asymmetries, which have a lower sensitivity. We also briefly summarize the results for the Fermilab Tevatron.
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