Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for di-muon decays of a low-mass Higgs boson in radiative decays
  of the \Upsilon(1S)   We search for di-muon decays of a low-mass Higgs boson (A^0) produced in
radiative \Upsilon(1S) decays. The \Upsilon(1S) sample is selected by tagging
the pion pair in the \Upsilon(2S, 3S) \to \pi^+ \pi^- \Upsilon(1S) transitions,
using a data sample of 92.8 \times 10^6 \Upsilon(2S) and 116.8 \times 10^6
\Upsilon(3S) events collected by the \babar\ detector. We find no evidence for
A^0 production and set 90% confidence level upper limits on the product
branching fraction \mathcal{B} (\Upsilon(1S) \to \gamma A^0) \times \mathcal{B}
(A^0 \to \mumu) in the range of (0.28 - 9.7) \times 10^{-6} for 0.212 \le
m_{A^0} \le 9.20 GeV/c^2. The results are combined with our previous
measurements of \Upsilon(2S,3S) \to \gamma A^0, A^0 \to \mumu to set limits on
the effective coupling of the \b-quark to the A^0.

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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph