Test of Factorization Hypothesis from Exclusive Non-leptonic B decays

We investigate the possibility of testing factorization hypothesis in non-leptonic exclusive decays of B-meson. In particular, we considered the non factorizable \bar{B^0} -> D^{()+} D_s^{()-} modes and \bar{B^0} -> D^{()+} (\pi^-, \rho^-) known as well-factorizable modes. By taking the ratios BR(\bar{B^0}-> D^{()+}D_s^{()-})/BR(\bar{B^0}-> D^{()+}(\pi^-,\rho^-)), we found that under the present theoretical and experimental uncertainties there’s no evidence for the breakdown of factorization description to heavy-heavy decays of the B meson.