Dissecting nucleon transition electromagnetic form factors

TL;DR

This paper investigates how diquark correlations, arising from dynamical chiral symmetry breaking, influence nucleon transition form factors, offering predictions for experimental validation.

Contribution

It provides a detailed analysis of the impact of diquark correlations on nucleon transition form factors within a Poincaré-covariant framework, including flavor separation and testable predictions.

Findings

Diquark correlations significantly affect nucleon transition form factors.

Flavor separation of the Roper resonance transition is achieved.

Predictions are made for experimental tests at modern facilities.

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 electromagnetically-induced nucleon-$\Delta$ and nucleon-Roper transitions, providing a flavour-separation of the latter and associated predictions that can be tested at modern facilities.