Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for the Flavor-Changing Neutral Current Decays B^+ -> mu^+ mu^-
  K^+ and B^0 -> mu^+ mu^-K^{*0}   We report on a search for the flavor-changing neutral current decays B^+ ->
mu^+ mu^- K^+ and B^0 -> mu^+ mu^- K^{*0} using 88 pb^{-1} of data from p-pbar
collisions at \sqrt{s}=1.8 TeV, collected with the Collider Detector at
Fermilab. Finding no evidence for these decays, we set upper limits on the
branching fractions B(B^+ -> mu^+ mu^- K^+) < 5.2x10^{-6} and B(B^0 -> mu^+
mu^-K^{*0}) < 4.0x10^{-6} at the 90% confidence level.

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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: nlin