TTP - TTP99-41 Second Order QCD Corrections to the Top Decay Rate

Institute for Theoretical Particle Physics (TTP)

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

K.G. Chetyrkin, R. Harlander, T. Seidensticker, and M. Steinhauser

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TTP99-41 Second Order QCD Corrections to the Top Decay Rate

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