Exchange Current Contributions to the Charge Radii of the Nucleons

Details Exchange Current Contributions to the Charge Radii of the Nucleons Exchange Current Contributions to the Charge Radii of the Nucleons

1997-11-06

arxiv.org/abs/hep-ph/9711252v2

Phys.Rev. C59 (1999) 2829-2835

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, LaTeX, considerably revised version

Scientific paper

10.1103/PhysRevC.59.2829

The exchange charge density operators that correspond to the Fermi-invariant decomposition of quark-quark interactions have been constructed. Their effect on the electromagnetic charge radii of the nucleons, in combination with that of the relativistic corrections to the single-quark operator, has been studied with a constituent quark model with a spin and flavor dependent hyperfine and a linear confining interaction, which gives a quantitative description of the spectra for the light and strange baryons. The model gives proton and neutron charge radii in approximate agreement with the empirical results assuming reasonable values for the radii of the constituent quarks.

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