Electromagnetic form-factors of nucleons in a light cone diquark model

Feb, 2002
17 pages
Published in:
  • Phys.Rev.C 65 (2002) 035205
e-Print:
Report number:
  • USM-TH-115

Citations per year

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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.
  • nucleon: form factor
  • quark: relativistic
  • diquark: spectator
  • diquark: scalar
  • diquark: vector
  • quantization: light cone
  • transformation
  • symmetry breaking: SU(6)
  • form factor: electric
  • form factor: magnetic