Light-front holography with chiral symmetry breaking

TL;DR

This paper introduces an analytically solvable light-front Hamiltonian model for hadrons that incorporates finite quark masses and longitudinal confinement, improving agreement with experimental meson data while respecting chiral symmetry.

Contribution

It extends light-front holography by including finite quark masses and a longitudinal confinement term, providing a better low-energy QCD approximation.

Findings

Improved mass spectroscopy predictions for light mesons

Model preserves chiral symmetry and Gell-Mann-Oakes-Renner relation

Maintains Lorentz invariance and Lorentz symmetry

Abstract

We present an analytically solvable 3D light-front Hamiltonian model for hadrons that extends light-front holography by including finite mass quarks and a longitudinal confinement term. We propose that the model is suitable as an improved analytic approximation to QCD at a low resolution scale. We demonstrate that it preserves desired Lorentz symmetries and it produces improved agreement with the experimental mass spectroscopy and other properties of the light mesons. Importantly, the model also respects chiral symmetry and the Gell-Mann-Oakes-Renner relation.