The B\to D_s^{(*)}πdecays in the perturbative QCD

Details The B\to D_s^{(*)}πdecays in the perturbative QCD The B\to D_s^{(*)}πdecays in the perturbative QCD

2010-04-27

arxiv.org/abs/1004.4772v1

J.Phys.G36:125004,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures

Scientific paper

In this paper, we calculate the branching ratios for B^0\to D_s^+\pi^-, B^+\to D_s^+\pi^0, B^0\to D_s^{*+}\pi^- and B^+\to D_s^{*+}\pi^0 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 current experimental upper limit. In the numerical calculation, we take the decay constant and the shape parameter of the vector meson D^{*}_s as f_{D^{*}_s}=312 MeV and a_{D^{*}_s}=0.78 respectively, which are larger than those in the previous calculations.

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