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Electromagnetic Form Factors of Nucleons in a Light-cone Diquark Model

High Energy Physics - Phenomenology 2009-11-07 v2 High Energy Physics - Experiment Nuclear Experiment Nuclear Theory

Abstract

We investigate the electromagnetic form factors of nucleons within a simple relativistic quark spectator-diquark model using the light-cone formalism. Melosh rotations are applied to both quark and vector diquark. It is shown that the difference between vector and scalar spectator diquarks reproduces the right electric form factor of neutrons, and both the form factors GE(Q2)G_E(Q^2) and GM(Q2)G_M(Q^2) of the proton and neutron agree with experimental data well up to Q2=2 GeV2Q^2=2 ~\rm{GeV}^2 in this simple model.

Keywords

Cite

@article{arxiv.hep-ph/0202015,
  title  = {Electromagnetic Form Factors of Nucleons in a Light-cone Diquark Model},
  author = {Bo-Qiang Ma and Di Qing and Ivan Schmidt},
  journal= {arXiv preprint arXiv:hep-ph/0202015},
  year   = {2009}
}

Comments

16 pages, Revtex4, minor changes, to appear in Phys. Rev. C