Abstract
Top quark decay in the Minimal Supersymmetric Model is studied. Possible decays are t → bW^+,t^^〜_1z^^〜_k,b^^〜w^^〜^+_1, t^^〜_1g^^〜 and bH^+. We find that the supersymmetric modes can overwhelmingly dominate the t decay in a wide and still allowed range of the model parameters and that they have very distinctive signatures compared to the standard mode bW^+. This could shed a crucial impact on t quark search.
