Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: RPA Vector Meson Leptonic Widths   Recent J = 0 (para) baryonium interpretations of the BES narrow resonance
data near the e^-e^+ -> p anti-p threshold suggests the existance of ortho
baryonium. To assist future searches we study J = 1 states, especially vector
meson leptonic decays, and report RPA calculations for both light and heavy
mesons using a Coulomb-gauge QCD-inspired model. Since the phi(1880) is the
only missing model state, other discovered J = 1 particles in this region are
ortho baryonium candidates.

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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph