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) and GM(Q²) of the proton and neutron agree with experimental data well up to Q²=2 GeV² in this simple model.
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Ma et al. (2002) studied this question.
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