Generalized form factors of the nucleon in a light-cone spectator-diquark model

Abstract

We investigate the generalized form factors of the nucleon in a light-cone spectator-diquark model. Compared to the form factors, the generalized form factors contain some more information of the structure of the nucleon. In our calculation, both the scalar and the axial-vector spectator-diquark are taken into account. As a relation between the spin in the instant form and that in the light-cone form, the Melosh-Wigner rotation effect is included for both the quark and the axial-vector diquark. We also provide numerical results from our model calculations, and the results are comparable with those from lattice QCD.

arXiv comment19 latex pages, 6 figures

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• Electroweak properties of octet baryons in light-cone quark-diquark model
• Quark angular momentum in a spectator model
• Six-dimensional light-front Wigner distributions of the proton
• Quark-antiquark asymmetry of helicity distributions in the nucleon sea
• Photon-pion transition form factor of two photon process at BESIII from light-cone quantum field theory
• Leading and higher twist transverse momentum dependent parton distribution functions in the spectator model