Two-body Bc → D(s)(*)P, D(s)(*)V decays in the perturbative QCD approach

We make a systematic investigation on the two-body nonleptonic decays B-c -> D-(s)(()*P-), D-(s)(()*V-), by employing the perturbative QCD approach based on k(T) factorization, where P and V denote any light pseudoscalar meson and vector meson, respectively. We predict the branching ratios and direct CP asymmetries of these B-c decays and also the transverse polarization fractions of B-c -> D*V-(s) decays. It is found that the nonfactorizable emission diagrams and annihilation-type diagrams have remarkable effects on the physical observables in many channels, especially the color-suppressed and annihilation-dominant decay modes. A possible large direct CP violation is predicted in some channels; and a large transverse polarization contribution which can reach 50% similar to 70% is predicted in some of the B-c -> D*V-(s) decays.