Study of pure annihilation type decays $B \to D_s^{*} K$

Details Study of pure annihilation type decays $B \to D_s^{*} K$ Study of pure annihilation type decays $B \to D_s^{*} K$

2003-04-30

arxiv.org/abs/hep-ph/0304288v1

J.Phys.G29:2115-2124,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 figure

Scientific paper

10.1088/0954-3899/29/9/307

In this work, we calculate the rare decays $B^0 \to D_s^{*-} K^+$ and $B^+ \to D_s^{*+} \bar{K}^0$ in perturbative QCD approach with Sudakov resummation. We give the branching ratio of $10^{-5}$ for $B^0 \to D_s^{*-}K^+$, which will be tested soon in $B$ factories. The decay $B^+ \to D_s^{*+} \bar{K}^0$ has a very small branching ratio at ${\cal O}(10^{-8})$, due to the suppression from CKM matrix elements $|V_{ub}^* V_{cd}|$. It may be sensitive to new physics contributions.

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