Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Observation of Upsilon(3S) --> tau tau and Tests of Lepton
  Universality in Upsilon Decays   Using data collected with the CLEO-III detector at the CESR e+e- collider, we
report on a first observation of the decay of the Upsilon(3S) to tau tau, and
precisely measure the ratio of branching fractions of Upsilon(nS),n=1,2,3 to
tau tau and mu mu final states, finding agreement with expectations from lepton
universality. We derive absolute branching fractions for these decays, and also
set a limit on the influence of a low mass CP-odd Higgs boson in the decay of
the Upsilon(1S).

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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
1
The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: math
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat