Delta resonances, quark models, chiral symmetry and AdS/QCD

TL;DR

This paper compares the Delta resonance mass spectrum predictions from quark models, chiral symmetry restoration, and AdS/QCD, finding that AdS/QCD with a soft wall model closely matches observed data.

Contribution

It demonstrates that AdS/QCD with a soft wall effectively predicts Delta resonance masses, outperforming traditional quark models and chiral symmetry assumptions.

Findings

AdS/QCD with a soft wall matches experimental Delta resonance masses.

Quark models and chiral symmetry restoration are less accurate.

AdS/QCD provides a nearly perfect agreement with observed spectra.

Abstract

The mass spectrum of Delta resonances is compared to predictions based on three quark-model variants, to predictions assuming that chiral symmetry is restored in high-mass baryon resonances, and to predictions derived from AdS/QCD. The latter approach yields a nearly perfect agreement when the confinement property of QCD is modeled by a soft wall in AdS.