Leading Supersymmetric Electroweak Corrections to Top Quark Decay into a Neutralino and Light Stop

We calculate the leading supersymmetric electroweak corrections to using dimensional reduction scheme within an approximation of low , which can easily be extended to . The numerical results show that such corrections can exceed for and for , respectively. And these corrections vary insensitively with in the region allowed by the kinematics except for ones near the threshold.