The decays t→cV (V=γ,g or Z) induced through loop processes are calculated in the minimal supersymmetric model. We find that these new contributions can enhance the standard model branching fractions by as much as 3-4 orders of magnitude, i.e., B(t→cg)~10^-6, B(t→cZ)~10^-8, and B(t→cγ)~10^-8, for favorable values of the parameters.
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Li et al. (1994) studied this question.
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