RARE DECAYS OF THE TOP-QUARK IN THE TOP-COLOR-ASSISTED MULTISCALE TECHNICOLOR MODEL

The decays t --> cV (V = Z,gamma,g) induced through loop processes are calculated in the top-color-assisted multiscale technicolor model. We find that the extended technicolor interactions provide the main cont ribution to these decays, and the total contribution can enhance the s tandard model branching ratios by as much as 5 to 6 orders of magnitud e, i.e., B(t --> cZ) similar to 10(-6), B(t --> c gamma) similar to 10 (-7), B(t --> cg) similar to 10(-5), for the favorable parameter value s. This might provide an opportunity to detect the rare decays of the top quark in experiments.