TL;DR
This paper reviews recent advances in understanding how the nucleon spin can be decomposed into gauge-invariant components, focusing on the role of twist-three contributions in quantum chromodynamics.
Contribution
It provides a comprehensive overview of the gauge-invariant decomposition of nucleon spin, emphasizing the significance of twist-three operators.
Findings
Clarified the role of twist-three operators in nucleon spin decomposition
Summarized recent progress in gauge-invariant spin decomposition
Highlighted the importance of twist structure in nucleon spin studies
Abstract
I review the recent progress in understanding the complete gauge invariant decomposition of the nucleon spin with particular emphasis on its twist structure.
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