Determination of the CP Violation Angle γ Using B →D^*V Modes

We propose a method to determine the angle γ = arg(V_ub), using the B→D^*V (V = K^*,ρ) modes. The D^* is considered to decay to Dπ. An interference of the B→D^*0V and B→D^*0̅ V amplitudes is achieved by looking at a common final state f, in the subsequent decays of D⁰/D⁰̅ . A detailed analysis of the angular distribution allows determination, not only of γ and |V_ub| but also of all of the hadronic amplitudes and strong phases involved. No prior knowledge of doubly Cabibbo suppressed branching ratios of D are required. Large CP violating asymmetries ( ∼30% for γ = 30°) are possible if D⁰̅ →f is doubly Cabibbo suppressed, while D⁰→f is Cabibbo allowed, for decays of B⁺ or B⁰.