Self-consistent covariant description of twist-3 distribution amplitude of a pseudoscalar meson in the light-front quark model

TL;DR

This paper addresses the challenge of zero-mode contributions in light-front quark models when predicting the twist-3 distribution amplitude of pseudoscalar mesons, ensuring consistency with QCD chiral symmetry.

Contribution

It provides a self-consistent covariant framework for describing twist-3 distribution amplitudes in light-front quark models, resolving zero-mode issues.

Findings

Resolved zero-mode contributions in the light-front quark model.

Ensured chiral symmetry is maintained in the distribution amplitude.

Provided a covariant description consistent with QCD.

Abstract

We discuss the light-front zero-mode issue in the light-front quark model prediction of the twist-3 distribution amplitude of a pseudoscalar meson from the perspective of the vacuum fluctuation consistent with the chiral symmetry of QCD.