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arXiv · hep-ph/9205245

QCD Corrections to the Charged-Higgs-Boson Decay of a Heavy Top Quark

Jiang Liu·York-Peng Yao
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Abstract

It is shown that up to an over all scale the lowest-order QCD corrections to $t\to H^+b$ and to $t\to W^+b$ are the same in the heavy top limit. Asymptotically, they are given by $-{4α_s\over 3π}[{π^2\over 3}-{5\over 4}]$, resulting in a reduction in the decay rate by about $9\%$, rather than $6\%$ reported previously in the literature. This is verified explicitly by an analytic calculation. The application of the equivalence theorem to this process is also discussed.

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Jiang Liu, York-Peng Yao. 1992-05-29. QCD Corrections to the Charged-Higgs-Boson Decay of a Heavy Top Quark. https://doi.org/10.1103/physrevd.46.5196

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