Impact of SUSY-QCD corrections on top quark decay distributions

We compute the supersymmetric QCD corrections to the decay distribution of polarized top quarks for the semileptonic decay mode t(↑)→bl+νl. As a byproduct, we reinvestigate the SUSY-QCD corrections to the total decay width Γ(t→W+b) and resolve a discrepancy between two previous results in the literature.