Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic Transition Form Factors of Mesons   Using a counting scheme which treats pseudoscalar and vector mesons on equal
footing, the decays of the narrow light vector mesons omega and phi into a
dilepton and a pseudoscalar pi-meson or eta-meson, respectively, are
calculated. Thereby, all required parameters could be determined by other
reactions so that one has predictive power for the considered decays. The
calculated partial decay widths are in very good agreement with the
experimental data.

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The categories of this paper are: nucl-th
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The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph