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Observation of $B^0 \to D_s^+ π^-$

K. Abe
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Abstract

We report the first observation of $B^0 \to D_s^+ π^-$ and an improved measurement of ${\bar B^0} \to D_s^+K^-$ based on $274 \times 10^6$ $B{\bar B}$ events collected with the Belle detector at KEKB. We measure the branching fractions ${\cal B}({\bar B^0} \to D_s^+K^-) = (2.93 \pm 0.55 \pm 0.79) \times 10^{-5}$ and ${\cal B}(B^0 \to D_s^+ π^-) = (1.94 \pm 0.47 \pm 0.52) \times 10^{-5}$.

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K. Abe. 2004-08-23. Observation of $B^0 \to D_s^+ π^-$. https://arxiv.org/abs/hep-ex/0408109

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