NLO corrections to timelike and spacelike DVCS

TL;DR

This paper emphasizes the importance of including next-to-leading order (NLO) corrections in the analysis of both spacelike and timelike deeply virtual Compton scattering to accurately extract Generalized Parton Distributions (GPDs) and understand nucleon structure.

Contribution

It reviews recent progress and highlights the necessity of NLO corrections in the phenomenological study of DVCS and its crossed process, timelike Compton scattering.

Findings

NLO corrections are crucial for accurate GPD extraction.

Recent progress has been made in understanding timelike DVCS.

The study advocates for including NLO in future analyses.

Abstract

Generalized Parton Distributions (GPDs) offer a new way to access the quark and gluon nucleon structure. We advocate the need to supplement the experimental study of deeply virtual Compton scattering by its crossed version, timelike Compton scattering. We review recent progress in this domain, emphasizing the need to include NLO corrections to any phenomenological program to extract GPDs from experimental data.