Light mesons with one dynamical gluon within basis light-front quantization

TL;DR

This paper models light mesons using basis light-front quantization, incorporating a dynamical gluon and confinement, successfully describing meson spectra, form factors, and quark distributions.

Contribution

It introduces a light-front QCD Hamiltonian with a dynamical gluon and confinement, providing a comprehensive description of light meson properties.

Findings

Accurately fits light meson mass spectra.

Describes pion electromagnetic form factor well.

Predicts valence quark distribution functions.

Abstract

We investigate the structure of the light meson with one dynamical gluon from the light-front QCD Hamiltonian, determined for their constituent quark-antiquark and quark-antiquark-gluon Fock sectors, together with a three-dimensional confinement. After fitting the light meson mass spectroscopy, the light-front wave functions provide a good quality description of the pion electromagnetic form factor, and the valence quark distribution functions following QCD scale evolution.