CP violation in t overlinet production at e+e- colliders

The general production and decay mechanism of t overlinet in future high-energy e⁺e^- colliders has been investigated in a model-independent way, focusing on an observation of possible CP violation. Angular asymmetries sensitive to CP violation either in the production or in the subsequent decays have been found. General considerations are illustrated through one-loop effects induced by gluino exchange in the supersymmetric version of the Standard Model.