Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of $B^0 \to D_s^- K^0_S\pi^+$ and $B^+ \to D_s^- K^+K^+$
  branching fractions   We report a measurement of the $B^0$ and $B^+$ meson decays to the
$D_s^-K^0_S \pi^+$ and $D_s^- K^+K^+$ final states, respectively, using $657
\times 10^{6} B\overline{B}$ pairs collected at the $\Upsilon(4S)$ resonance
with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Using
the $D_s^-\to \phi\pi^-$, $K^{*}(892)^0 K^-$ and $K^0_S K^-$ decay modes for
the $D_s$ reconstruction, we measure the following branching fractions: ${\cal
B}(B^0\to D_s^{-}K^0_S\pi^+)=[0.47 \pm 0.06 (\mathrm {stat}) \pm 0.05 (\mathrm
{syst})]\times 10^{-4}$ and ${\cal B}(B^+\to D_s^-K^+K^+)= [0.93 \pm 0.22
(\mathrm {stat})\pm 0.10 (\mathrm {syst})]\times 10^{-5}$. We find the ratio of
the branching fraction of $B^+\to D_s^-K^+K^+$ to that of the analogous Cabibbo
favored $B^+\to D_s^-K^+\pi^+$ decay to be ${\cal R}_{\cal B} = 0.054 \pm 0.013
({\rm stat}) \pm 0.006 ({\rm syst})$, which is consistent with the na\"{\i}ve
factorization model. We also observe a deviation from the three-body
phase-space model for both studied decays.

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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cs