Generalized Parton Distributions: visions, basics, and realities

TL;DR

This paper introduces generalized parton distributions, discussing their spectral properties, different representations, and reviewing the current theoretical and phenomenological status of hard exclusive processes.

Contribution

It provides an overview of GPDs, emphasizing their spectral properties and the equivalence of various representations, along with a brief review of related theory and phenomenology.

Findings

Spectral property of GPDs highlighted

Equivalence of different GPD representations demonstrated

Current status of theory and phenomenology reviewed

Abstract

An introductory to generalized parton distributions is given which emphasizes their spectral property and its uses as well as the equivalence of various GPD representations. Furthermore, the status of the theory and phenomenology of hard exclusive processes is shortly reviewed.