The Supersymmetric QCD Radiative Corrections to Top Quark Semileptonic   Decays
  The one-loop supersymmetric QCD corrections to the top quark semileptonic decays $t\to b \bar{l} {\nu_l}$ are considered. The corrections are found to reduce the decay width. In the still acceptable parameter space the corrections to the percentage change in top quark semileptonic decay width can reach the level of -0.7%. 
Cong-Feng Qiao and Shou-Hua Zhu