The Nucleon's Antiquark Sea: A Virtual Meson Cloud or Gluons?

Details The Nucleon's Antiquark Sea: A Virtual Meson Cloud or Gluons? The Nucleon's Antiquark Sea: A Virtual Meson Cloud or Gluons?

1995-10-31

arxiv.org/abs/hep-ph/9510452v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, LaTeX, 2 figures optionally included using epsfig.sty Invited talk, BARYONS'95, Santa Fe, Oct. 1995, to appear in the

Scientific paper

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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