Abstract

The one-loop electroweak contributions of genuine supersymmetric particles (charginos, neutralinos and sfermions) to the SM top decay t→ W + b are calculated in the minimal supersymmetric model. The analytic expression is given for the renormalized decay rate. The numerical example shows that the corrections can reduce the width by a few percent if the squarks take their lowest allowed masses. Also, we compare these corrections with the corrections of SUSY QCD and extra Higgs bosons.

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