Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Nucleon's Antiquark Sea: A Virtual Meson Cloud or Gluons?   We study the possible contribution of the nucleon's virtual meson cloud to
the sea quark distribution as observed in deep inelastic lepton scattering. We
adjust the meson-nucleon cut-offs to the large-x tails of the antiquark
distributions, find qualitatively different behavior in the flavor singlet and
non-singlet channels and study the scale dependence of our results. We
demonstrate that, within convolution models, to reproduce the sea quark
distribution the relevant pion momenta should be around 0.8 GeV.

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The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
2
The categories of this paper are: math
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph