Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of $e^+e^-\to \Upsilon(\rm1S,2S)\eta$ and $e^+e^-\to \Upsilon(\rm
  1S)\eta^{\prime}$ at $\sqrt{s}=10.866$ GeV with the Belle detector   We report the first observation of the processes $e^+e^-\to\Upsilon(\rm
1S,2S)\eta$ at $\sqrt{s}=10.866$~GeV with a $10.2\sigma$ and $16.5\sigma$
significance respectively. The measured Born cross sections are $\sigma(e^+e^-
\to \Upsilon(2S)\eta)=2.07 \pm 0.21 \pm 0.19$~pb, and $\sigma(e^+e^- \to
\Upsilon(\rm 1S)\eta)=0.42 \pm 0.08 \pm 0.04$~pb. We also set the upper limit
on the cross section of the process $e^+e^- \to \Upsilon(\rm 1S)\eta^{\prime}$
to be $\sigma(e^+e^- \to \Upsilon(\rm 1S)\eta^{\prime})<0.035$~pb at $90\%$ CL.
The results are obtained with the data sample collected with the Belle detector
at the KEKB asymmetric-energy $e^+e^-$ collider in the energy range from
$10.63$~GeV to $11.02$~GeV.

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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: math
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The categories of this paper are: chao-dyn