Higher-twist corrections to nucleon structure functions from lattice QCD

TL;DR

This paper presents a non-perturbative lattice QCD calculation of higher-twist contributions to nucleon structure functions, accounting for mixing effects and renormalon ambiguities, revealing their significance at moderate momentum transfer values.

Contribution

It provides the first comprehensive non-perturbative evaluation of higher-twist effects in nucleon structure functions using lattice QCD, including all mixing and ambiguity considerations.

Findings

Higher-twist corrections are significant at moderate $q^2$ values.

All mixing effects and renormalon ambiguities are properly addressed.

The results improve understanding of non-perturbative contributions in nucleon structure.

Abstract

A genuinely non-perturbative evaluation of higher-twist contributions to the structure functions of the nucleon, with all mixing effects and renormalon ambiguities taken care of, is presented. Higher-twist corrections turn out to be significant at moderate values of $q^2$.