Regular Article - Theoretical Physics
Generalized parton distributions and transverse densities in a light-front quark–diquark model for the nucleons
Department of Physics, Indian Institute of Technology Kanpur, Kanpur, 208016, India
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Accepted: 27 May 2015
Published online: 12 June 2015
We present a study of the generalized parton distributions (GPDs) for the quarks in a proton in both momentum and position spaces using the light-front wave functions (LFWFs) 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 comparative 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.
© The Author(s), 2015