Deeply Virtual Compton Scattering at HERA and perspectives at CERN

TL;DR

This paper reviews how Deeply Virtual Compton Scattering (DVCS) data from HERA enhances understanding of the nucleon's three-dimensional structure, with implications for future experiments at CERN.

Contribution

It analyzes recent DVCS data within the dipole model framework to improve the imaging of quarks and gluons inside the nucleon.

Findings

DVCS data supports the dipole model predictions

Insights into the transverse motion of partons

Implications for future nucleon tomography at CERN

Abstract

Standard parton distribution functions contain neither information on the correlations between partons nor on their transverse motion, then a vital knowledge about the three dimensional structure of the nucleon is lost. Hard exclusive processes, in particular DVCS, are essential reactions to go beyond this standard picture. In the following, we examine the most recent data in view of the dipole model predictions and their implication on the quarks/gluons imaging (tomography) of the nucleon.