Theoretical study of deeply virtual Compton scattering off $^4$He

TL;DR

This paper provides a theoretical analysis of deeply virtual Compton scattering (DVCS) off helium-4 nuclei, offering insights into nuclear structure at the partonic level and comparing predictions with recent experimental data.

Contribution

It introduces a rigorous Impulse Approximation model for DVCS on helium-4, integrating advanced nuclear spectral functions and parton structure models, to interpret recent Jefferson Lab results.

Findings

Model successfully explains current experimental data.

Provides a tomographic view of nuclei in coordinate space.

Enhances understanding of nuclear partonic structure.

Abstract

An interesting breakthrough in understanding the elusive inner content of nuclear systems in terms of partonic degrees of freedom is represented by deeply virtual Compton scattering processes. In such a way, tomographic view of nuclei and bound nucleons in coordinate space could be achieved for the first time. Moreover, nowadays experimental results for such a process considering $^4$He targets recently released at Jefferson Lab are available. In this talk, the recent results of our rigorous Impulse Approximation for DVCS off $^4$He, in terms of state-of-the-art models of the nuclear spectral function and of the parton structure of the bound proton, able to explain present data, has been shown.