Target mass corrections to matrix elements in nucleon spin structure functions

TL;DR

This paper discusses how target mass corrections affect matrix elements in nucleon spin structure functions, focusing on twist-4 and leading-twist terms, which are important for precise understanding of nucleon spin structure.

Contribution

It provides an analysis of target mass corrections to both twist-4 and leading-twist matrix elements in nucleon spin structure functions, enhancing the accuracy of theoretical models.

Findings

Target mass corrections significantly impact twist-4 matrix elements.

Corrections to leading-twist $ ilde a_2$ are also analyzed.

Results improve the precision of nucleon spin structure function calculations.

Abstract

Target mass corrections to the twist-4 terms $\tilde f_2^{p,n,d}$ as well as to the leading-twist $\tilde a_2$ are discussed.