R. Decker et B. Krause, CP-VIOLATION IN THE (T)OVER-BAR-SYSTEM IN MODELS WITH SPONTANEOUS SYMMETRY-BREAKING, Modern physics letters A, 9(9), 1994, pp. 829-847
In the framework of models with spontaneous CP-violation we compute at
the one-loop level the CP-violating form factors which occur in the t
tBAR-production in e- + e+ annihilation.