We give an overview of the theory for generalized parton distributions. Topics covered are
their general properties and physical interpretation, the possibility to explore the three …

The generalized parton distributions, introduced nearly a decade ago, have emerged as a
universal tool to describe hadrons in terms of quark and gluonic degrees of freedom. They …

We develop the concept of quantum phase-space (Wigner) distributions for quarks and
gluons in the proton. To appreciate their physical content, we analyze the contraints from …

We produce the light-front wave functions (LFWFs) of the nucleon from a basis light-front
approach in the leading Fock-sector representation. We solve for the mass eigenstates from …

▪ Abstract This review explains why generalized parton distributions and the related
quantum phase-space distributions are useful in exploring the quark and gluon structure of …

We formulate a light-front spectator model for the proton incorporating the gluonic degree of
freedom. In this model, at high energy scattering of the proton, the active parton is a gluon …

Combining dispersion and operator product expansion techniques, we derive the conformal
partial wave decomposition of the virtual Compton scattering amplitude in terms of complex …

We solve for the gluon generalized parton distributions (GPDs) inside the proton at zero
skewness, focusing specifically on leading twist chiral-even GPDs. We obtain and employ …

We study the unpolarized and the helicity-dependent generalized parton distributions
(GPDs) for the valence quarks of the proton in both momentum space and position space …

We introduce a string-based parametrization for nucleon quark and gluon generalized
parton distributions (GPDs) that is valid for all skewness. Our approach leverages conformal …