  We survey all possible supersymmetric three-body decays of the top quark in
the framework of the MSSM and present detailed numerical analyses of the most
relevant cases. Although the two-body channels are generally dominant, it is
not inconceivable that some or all of our most favourite two-body SUSY
candidates could be suppressed. In this event there is still the possibility
that some of the available three-body SUSY modes might exhibit a substantial
branching fraction and/or carry exotic signatures that would facilitate their
identification. Furthermore, in view of the projected inclusive measurement of
the top-quark width $\Gamma_t$ in future colliders, one should have at one's
disposal the full second order correction (electroweak and strong) to the value
of that parameter in the MSSM. Our analysis confirms that some supersymmetric
three-body decays could be relevant and thus contribute to $\Gamma_t$ at a
level comparable to the largest one loop supersymmetric effects on two-body
modes recently computed in the literature.

High Energy Physics - Phenomenology