The Sea in the Nucleon

黃偉彥(W-Y. P. Hwang)；J. Speth

Chinese Journal of Physics

29卷5期（1991 / 10 / 01）

461 - 468

英文

The meson-exchange model, as proposed recently by Hwang, Speth, and Brown in generalizing the Sullivan process to account for the sea distributions of a free nucleon at moderate Q^2 (e.g., up to 20 GeV^2), is described. The form factors associated with the couplings of mesons to baryons such as πNN, πNΔ, and KNΛ couplings are constrained by the CCFR neutrino data. The model then yields predictions consistent with the CDHS and Fermilab E615 data. It is also found that the recent finding by the New Muon Collaboration (NMC) on the violation of the Gottfried sum rule can be understood quantitatively.

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