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Second Order QCD Corrections to the Top Decay Rate

K. G. Chetyrkin·R. Harlander·T. Seidensticker·M. Steinhauser
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Abstract

We report on a recent calculation of the top decay rate up to order α_s^2. It is based on asymptotic expansions of the off-shell top propagator, followed by a Padé approximation in order to reach the physically relevant point q^2=Mt^2.

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K. G. Chetyrkin, R. Harlander, T. Seidensticker, M. Steinhauser. 1999-10-14. Second Order QCD Corrections to the Top Decay Rate. https://arxiv.org/abs/hep-ph/9910339

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