Weak decay of heavy vector mesons

We consider the possibility that weak decay may compete with or dominate electromagnetic decay of heavy vector mesons. We find that this possibility is realized for vector mesons containing t quarks (Q = 2/3) for m/sub t/ > 12 GeV if we use the mass-splitting formula of De Rujula et al. We further analyze the possible weak decay modes and find that annihilation contributions are suppressed by mixing angles for both the D+/sub t/* (td-bar) and F+/sub t/* (ts-bar). For the D0/sub t/* (tu-bar) we find that the decay mode D0/sub t/* → bd-bar may be significant depending on the value of m/sub t/ and the amount of nonleptonic enhancement