Supersymmetric QCD corrections to the W-boson width

We calculate the one-loop supersymmetric QCD corrections to the width of the W-boson. We find that these are of order ∼αφM2WM2SГud, where Ms is the supersymmetry breaking scale and Γud the tree level hadronic width for W+ → ud. Due to the appearance of the suppression factor ∼ 120 these are at least two orders of magnitude smaller than the standard QCD corrections ∼αφГud and hence of the order of the two-loop electroweak effects. Therefore supersymmetric QCD corrections will only be of relevance once experiments reach that level of accuracy.