Decays $B\to D_{\left(s\right)}^{\left(\ast \right)}h$ ($h=\pi ,\rho$) in confined covariant quark model

Abstract

Decay processes $B\to D_{\left(s\right)}^{\left(\ast \right)}h$ ($h=\pi ,\rho$) are studied in the framework of the confined covariant quark model using the naïve factorization assumption. We observe that the theoretical results on branching fractions have tendency to systematically exceed the experimental numbers. Such a behavior has already been seen for similar processes by other authors.