Generalized parton distributions and Deeply Virtual Compton Scattering in Color Glass Condensate model

TL;DR

This paper calculates quark and gluon GPDs and DVCS cross sections within the Color Glass Condensate model at small-x, predicting energy independence at very small-x, which can be tested at future colliders.

Contribution

It provides the first evaluation of GPDs and DVCS cross sections in the CGC framework at small-x, highlighting saturation effects and energy independence.

Findings

DVCS cross section saturates at very small-x

Predictions are testable at future Electron-Ion Collider

GPDs are evaluated within the CGC model at high energies

Abstract

Within the framework of the Color Glass Condensate model, we evaluate quark and gluon Generalized Parton Distributions (GPDs) and the cross section of Deeply Virtual Compton Scattering (DVCS) in the small-$x_{B}$ region. We demonstrate that the DVCS cross section becomes independent of energy in the limit of very small $x_{B}$, which clearly indicates saturation of the DVCS cross section. Our predictions for the GPDs and the DVCS cross section at high-energies can be tested at the future Electron-Ion Collider and in ultra-peripheral nucleus-nucleus collisions at the LHC.