Abstract. In this paper, we calculate the branching ratios for B⁰ → D⁺_sπ⁻, B⁺ → D⁺_sπ⁰, B⁰ → D*⁺_sπ⁻ and B⁺ → D*⁺_sπ⁰ decays in the perturbative QCD factorization approach. We find that the calculated branching ratios of these four decay channels agree well with the measured values and the current experimental upper limit. In the numerical calculation, we take the decay constant and the shape parameter of the vector meson D*_s as MeV and respectively, which are larger than those in the previous calculations.

Print publication: Issue 12 (December 2009)
Received 15 May 2009
Published 23 October 2009