Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\phi$ and $\omega$ Meson Production in pp Reactions at $p_{lab}$=3.67
  GeV/c   The exclusive production cross sections for $\omega$ and $\phi$ mesons have
been measured in proton-proton reactions at $p_{lab}=3.67$ GeV/c. The observed
$\phi/\omega$ cross section ratio is $(3.8\pm0.2^{+1.2}_{-0.9})\times 10^{-3}$.
After phase space corrections, this ratio is enhanced by about an order of
magnitude relative to naive predictions based upon the Okubo-Zweig-Iizuka (OZI)
rule, in comparison to an enhancement by a factor $\sim 3$ previously observed
at higher beam momenta. The modest increase of this enhancement near the
production threshold is compared to the much larger increase of the
$\phi/\omega$ ratio observed in specific channels of $\bar pp$ annihilation
experiments. Furthermore, differential cross section results are also presented
which indicate that although the $\phi$ meson is predominantly produced from a
$^3P_1$ proton-proton entrance channel, other partial waves contribute
significantly to the production mechanism at this beam momentum.

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The categories of this paper are: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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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: plasm-ph
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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: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin