A pivotal year for Generalized Parton Distributions

TL;DR

This paper reviews the progress and future prospects in the study of Generalized Parton Distributions (GPDs), highlighting recent experimental advances, upcoming high-precision measurements, and the potential of the Electron-Ion Collider for spin physics.

Contribution

It provides a comprehensive overview of the developments in GPD research, emphasizing the transition from initial extraction methods to future high-precision experiments and analysis tools.

Findings

Initial extraction of GPDs from experiments has begun.

Upcoming experiments will expand kinematic coverage and precision.

Future EIC will enable advanced spin physics studies.

Abstract

The field of Generalized Parton Distribution (GPD) benefited from a wealth of exclusive reactions measurements since 2000. Extraction of GPDs from observables has begun with this first generation of experiments. In the short and mid-term future the programs of COMPASS-II and JLab at 12 GeV will enlarge the existing kinematic domain and open an era of high-precision measurements. Tools for phenomenological analysis are being developed at the same time and will be mature to handle these forthcoming measurements. In the long-term future the EIC project will allow an ambitious spin program in the small to intermediate $x_B$ domain.