Momentum transfer dependence of gpds

TL;DR

This paper investigates how the momentum transfer affects General Parton Distributions (GPDs) by analyzing various experimental data and form factors, providing a comprehensive model validated across multiple reactions.

Contribution

It introduces a new approach to determine the t-dependence of GPDs using factorization and extensive experimental data, with minimal free parameters.

Findings

The t-dependence of GPDs is consistent across different reactions.

The model accurately describes electromagnetic form factors of proton and neutron.

Validation across a wide energy range confirms the robustness of the approach.

Abstract

Based on the factorization representation of the General Parton Distributions (GPDs) the momentum transfer dependence was determined by the analysis of the different representations of parton distribution functions (PDFs) and all possible experimental data of the electromagnetic form factors of the proton and neutron. The obtained $t$-dependence of the GPDs is checked by analysis of the different hadronic reactions (including exclusive and elastic hadron scattering) in a wide energy region with minimum free fitting parameters.