Structure of the orbital excited $N^*$ from the Schwinger-Dyson equations

TL;DR

This paper advances the calculation of transition form factors for the N*(1535) baryon using a quark-diquark model and Schwinger-Dyson equations with a contact interaction, providing insights into baryon structure.

Contribution

It introduces a fully consistent framework combining Schwinger-Dyson and Bethe-Salpeter equations with a vector contact interaction for baryon transition form factors.

Findings

Progress in evaluating N* transition form factors.

Application of a vector contact interaction in a quark-diquark model.

Enhanced understanding of baryon excitation structure.

Abstract

We present progress in the evaluation of $\gamma^* N \rightarrow N^*(1535)$ transition form factors in a quark-diquark picture of these baryons. Our analysis is based upon the fully-consistent treatment of a vector $\times$ vector contact interaction, embedded in the interlaced formalism of Schwinger-Dyson and Bethe-Salpeter equations.