Magnetic moments of $\frac{1}{2}^-$ baryon resonances in hot and dense strange hadronic matter

TL;DR

This paper calculates the magnetic moments of negative parity baryon resonances in hot, dense strange hadronic matter using chiral models, revealing how medium conditions affect their internal quark structure and magnetic properties.

Contribution

It introduces a combined approach using chiral $SU(3)$ quark mean field and chiral constituent quark models to study in-medium magnetic moments of baryon resonances.

Findings

Magnetic moments decrease with increasing density and temperature.

Internal quark and sea quark contributions significantly influence magnetic moments.

Isospin asymmetry and strangeness fraction alter the effective magnetic moments.

Abstract

This work primarily focusses on determining the magnetic moments of $\frac{1}{2}^-$ baryon resonances in the presence of hot and dense hadronic matter. In the chiral $SU(3)$ quark mean field model approach, we have essentially accounted for the effects on in-medium scalar meson fields to investigate the impact of high densities on the in-medium baryon masses and their constituent quarks. In light of chiral constituent quark model $\chi$CQM, we have calculated the magnetic moments of $\frac{1}{2}^-$ baryon resonances and scrutinized the effects due to its internal constituents: the valence quarks, sea quarks and the orbital moment of sea quarks. Furthermore, we have investigated the effective baryonic magnetic moments for the finite magnitudes of isospin asymmetry and strangeness fraction.