Structure of the Nucleon and Roper Resonance with Diquark Correlations

TL;DR

This paper explores the internal structure of the nucleon and Roper resonance using a quark-diquark model, revealing similar charge radii and providing insights into their electromagnetic properties.

Contribution

It introduces a quark-diquark model analysis of nucleon and Roper resonance form factors, highlighting their comparable charge radii.

Findings

Nucleon and Roper resonance have nearly identical charge radii.

The quark-diquark model effectively describes their electric form factors.

Abstract

We investigate the electric form factors of the nucleon and Roper resonance using a quark-diquark model. We find that the charge radii of the nucleon and Roper resonance are almost the same in size.