The concept of phenomenological light-front wave functions -- Regge improved diquark model predictions

Abstract

We introduce a classification scheme for parton distribution models and we model generalized parton distributions (GPDs), their form factors, and parton distribution functions (PDFs), integrated and unintegrated ones, in terms of unintegrated double distributions that are obtained from the parton number conserved overlap of effective light-front wave functions. For a so-called "spherical" model we present general expressions for all twist-two related non-perturbative quantities in terms of one effective light-front wave function, including chiral-odd GPDs. We also discuss the Regge improvement of such quark models from the $s$-channel point of view and study the relations between zero-skewness GPDs and unintegrated PDFs on a more general ground. Finally, we provide a few phenomenological applications that emphasize the role of orbital angular momenta.

arXiv comment104 pages, 7 figures, 2 tables

References in corpus (5)

• On "dual" parametrizations of generalized parton distributions
• Analytic Properties of Hard Exclusive Amplitudes
• Transverse-momentum dependent parton distributions in large-Nc QCD
• Relativistic Constituent Quark Model for Baryons
• GPD sum rules: a tool to reveal the quark angular momentum

Cited by in corpus (5)

• Modelling the nucleon structure
• Generalized parton distributions of sea quark at zero skewness in the light-cone Model
• Double distributions and generalized parton distributions from the parton number conserved light front wave function overlap representation
• Inverse Radon transform at work
• Covariance constraints for light front wave functions