Connected and disconnected contributions to nucleon form factors and parton distributions

TL;DR

This paper offers a unified interpretation of connected and disconnected contributions to nucleon form factors and parton distributions using generalized parton distributions, highlighting non-perturbative effects in hadronic structure and heavy-ion collisions.

Contribution

It introduces a framework that unifies the understanding of connected and disconnected contributions in nucleon structure using ab-initio Euclidean path-integral methods.

Findings

Unified interpretation of contributions to nucleon form factors and PDFs

Development of a phenomenology for non-perturbative effects

Extension to heavy-ion collision observables

Abstract

Using the framework of generalized parton distribution, we provide a unified interpretation of the connected and disconnected contributions from the ab-initio Euclidean path-integral formulation of the hadronic tensor in both the nucleon elastic form factors and the parton distribution functions. We develop a phenomenology to elucidate non-perturbative contributions to deep inelastic structure functions, which can be extended to observables in heavy-ion collisions probing baryon junctions.