Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of a0(980)--f0(980) mixing   Using samples of 2.25*10^8 J/psi events and 1.06*10^8 psi' events collected
with the BES III detector, we study the f0(980) to a0(980) and a0(980) to
f0(980) transitions in the processes J/psi --> phi f0(980) --> phi a0(980) and
chi_c1 --> pi^0 a0(980) --> pi^0 f0(980), respectively. Evidence for f0(980)
--> a0(980) is found with a significance of 3.4 sigma, while in the case of
a0(980) --> f0(980) transition, the significance is 1.9 sigma. Measurements and
upper limits of both branching ratios and mixing intensities are determined.

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The categories of this paper are: quant-ph
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The categories of this paper are: math
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
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The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th