Higher twist light-cone distribution amplitudes of vector mesons in QCD

TL;DR

This paper systematically constructs twist-3 light-cone distribution amplitudes for vector mesons in QCD using conformal expansion, satisfying all equations of motion and constraints for various mesons.

Contribution

It provides a complete set of twist-3 distribution amplitudes for , , K^*, and  mesons, advancing the theoretical understanding of their internal structure.

Findings

Distribution amplitudes satisfy all equations of motion.

Complete set constructed for multiple vector mesons.

Framework based on conformal expansion enhances accuracy.

Abstract

We present a systematic study of twist-3 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. A complete set of distribution amplitudes is constructed for \rho, \omega, K^* and \phi mesons, which satisfies all (exact) equations of motion and constraints from conformal expansion.