Analysis of the B-q -> D-q(D-q*)P and B-q -> D-q(D-q*)V Decays Within the factorization approach in QCD
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KünyeAzizi, K., Khosravi, V., & Falahati, F. (2009). Analysis of the B-q -> D-q(D-q*)P and B-q -> D-q(D-q*)V Decays Within the factorization approach in QCD. International Journal of Modern Physics A, 24(31), 5845-5860. http://dx.doi.org/10.1142/S0217751X0904751X
Using the factorization approach and considering the contributions of the current-current, QCD penguin and electroweak penguin operators at the leading approximation, the decay amplitudes and decay widths of B-q -> D-q(D-q*)P and B-q -> D-q(D-q*)V transitions, where q = u, d, s and P and V are pseudoscalar and vector mesons, are calculated in terms of the transition form factors of the B-q -> D-q and B-q -> D-q*. Having computed those form factors in three-point QCD sum rules, the branching fraction for these decays are also evaluated. A comparison of our results with the predictions of the perturbative QCD as well as the existing experimental data is presented.