Light-Front Quantum Chromodynamics: A framework for the analysis of hadron physics

TL;DR

This paper discusses the light-front Hamiltonian formulation of QCD as a promising framework for understanding hadron structure, complementing lattice methods, and highlights its potential for experimental validation.

Contribution

It provides an overview of LFQCD's potential, challenges, and specific goals, emphasizing its role in nonperturbative hadron physics analysis.

Findings

LFQCD offers direct access to hadron quark and gluon amplitudes.

It complements lattice QCD by providing a different nonperturbative approach.

Identifies key challenges and goals for advancing LFQCD research.

Abstract

An outstanding goal of physics is to find solutions that describe hadrons in the theory of strong interactions, Quantum Chromodynamics (QCD). For this goal, the light-front Hamiltonian formulation of QCD (LFQCD) is a complementary approach to the well-established lattice gauge method. LFQCD offers access to the hadrons' nonperturbative quark and gluon amplitudes, which are directly testable in experiments at existing and future facilities. We present an overview of the promises and challenges of LFQCD in the context of unsolved issues in QCD that require broadened and accelerated investigation. We identify specific goals of this approach and address its quantifiable uncertainties.