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

作者：Azizi K^*; Khosravi R; Falahati F

来源：International Journal of Modern Physics A, 2009, 24(31): 5845-5860.

DOI：10.1142/S0217751X0904751X

• QCD factorization
• QCD sum-rules
• current-current
• QCD penguin
• electroweak penguin operator

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.

• 出版日期2009-12-20