Deeply Virtual Compton Scattering in Improved Holographic QCD

TL;DR

This paper develops a holographic QCD model to compute Deeply Virtual Compton Scattering amplitudes, successfully fitting experimental data for differential and total cross-sections with a single pomeron-based model.

Contribution

It introduces an improved holographic QCD approach to describe DVCS scattering amplitudes and fits experimental data with a unified model.

Findings

Achieved a good fit to H1-ZEUS data with $ ext{chi}^2_{dof} ext{ around } 1.5

Demonstrated the model's ability to describe both differential and total cross-sections

Validated the holographic approach for scattering processes in QCD

Abstract

We present our current progress in the holographic computation of the scattering amplitude for Deeply Virtual Compton Scattering (DVCS) processe, as a function of the Mandelstam invariant $t$. We show that it is possible to describe simultaneously the differential cross-section and total cross-section of DVCS data with a single holographic model for the pomeron. Using data from H1-ZEUS we obtained a $\chi^2_{dof} \sim 1.5$ for the best fit to the data.