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Using the factorization approach and considering the contributions of thecurrent-current, QCD penguin and electroweak penguin operators at the leadingapproximation, the decay amplitudes and decay widths of $B_q\to D_q(D_q^*) P$and $B_q\to D_q(D_q^*) V$ transitions, where $q=u,d,s$ and P and V arepseudoscalar and vector mesons, are calculated in terms of the transition formfactors of the $B_q\to D_{q}$ and $B_q\to D^{*}_{q}$. Having computed thoseform factors in three-point QCD sum rules, the branching fraction for thesedecays are also evaluated. A comparison of our results with the predictions ofthe perturbative QCD as well as the existing experimental data is presented.

Analysis of the $B_q\to D_q(D_q^*) P$ and $B_q\to D_q(D_q^*) V$ decays within the factorization approach in QCD

Analysis of the $B_q\to D_q(D_q^) P$ and $B_q\to D_q(D_q^) V$ decays within the factorization approach in QCD