Flavour decomposition of electromagnetic transition form factors of nucleon resonances

TL;DR

This paper investigates how diquark correlations, arising from dynamical chiral symmetry breaking, influence the electromagnetic form factors of nucleons and their resonances, offering flavor-separated predictions for experimental testing.

Contribution

It provides a detailed analysis of flavor decomposition of nucleon and Roper resonance electromagnetic form factors within a Poincaré-covariant framework, highlighting the role of diquark correlations.

Findings

Diquark correlations significantly affect electromagnetic form factors.

Flavor-separated form factors can be tested at modern facilities.

The approach links dynamical chiral symmetry breaking to observable properties.

Abstract

In Poincar\'e-covariant continuum treatments of the three valence-quark bound-state problem, the force behind dynamical chiral symmetry breaking also generates nonpointlike, interacting diquark correlations in the nucleon and its resonances. We detail the impact of these correlations on the nucleon's elastic and nucleon-to-Roper transition electromagnetic form factors, providing flavour-separation versions that can be tested at modern facilities.