Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Measurement of eta_b(1S) From Upsilon(3S) Radiative Decay at CLEO   Using CLEO data, we report on the confirmation of the eta_b(1S0) ground state
of bottomonium in the radiative decay Upsilon(3S) -> gamma eta_b. We determine
its mass to be M(eta_b) = 9391.8 +- 6.6 +- 2.1 MeV, which corresponds to the
hyperfine splitting Delta M_hf(1S) = 68.5 +- 6.6 +- 2.0 MeV, and the branching
fraction B(Upsilon(3S) -> gamma eta_b) = (7.1 +- 1.8 +- 1.1) x 10^-4. These
results agree with those previously reported by BaBar.

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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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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: physics
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph