Radiative decay into gamma-baryon of dynamically generated resonances from the vector-baryon interaction

TL;DR

This paper investigates the radiative decay processes of dynamically generated vector-baryon resonances, revealing diverse decay widths and providing predictions that can inform experimental studies of their nature.

Contribution

It introduces a theoretical framework for calculating radiative decay widths of vector-baryon resonances, highlighting differences across charge states and comparing helicity amplitudes with experimental data.

Findings

Different partial decay widths for various resonances and charge states

Predicted helicity amplitudes align with available experimental data

Decay width variations suggest rich structure of these resonances

Abstract

We study the radiative decay into $\gamma$ and a baryon of the SU(3) octet and decuplet of nine and ten resonances that are dynamically generated from the interaction of vector mesons with baryons of the octet and the decuplet respectively. We obtain quite different partial decay widths for the various resonances, and for different charge states of the same resonance, suggesting that the experimental investigation of these radiative decays should bring much information on the nature of these resonances. For the case of baryons of the octet we determine the helicity amplitudes and compare them with experimental data when available.