Generalized parton distributions and transverse densities in a light-front quark-diquark model for the nucleons

Abstract

We present a study of the generalized parton distributions for the quarks in a proton in both momentum and position spaces using the light-front wave functions of a quark-diquark model for the nucleon predicted by the soft-wall model of AdS/QCD. The results are compared with the soft-wall AdS/QCD model of proton GPDs for zero skewness. We also calculate the GPDs for nonzero skewness. We observe that the GPDs have a diffraction pattern in longitudinal position space, as seen before in other models. Then we present a comparitive study of the nucleon charge and anomalous magnetization densities in the transverse plane. Flavor decompositions of the form factors and transverse densities are also discussed.

19 figures; text modified

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Cited by in corpus (9)

• A light front quark-diquark model for the nucleons
• Angular momentum and generalized parton distributions for the proton with basis light-front quantization
• Helicity-dependent generalized parton distributions for nonzero skewness
• Gravitational form factors and angular momentum densities in light-front quark-diquark model
• Deuteron transverse densities in holographic QCD
• Charge and longitudinal momentum distributions in transverse coordinate space
• Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model
• Leading twist GTMDs at nonzero skewness and Wigner distributions in boost-invariant longitudinal position space
• Form factors of the nucleon by using the t dependence of parton distribution functions