What can we learn from the breaking of the Wandzura-Wilczek relation?
Alberto Accardi, Alessandro Bacchetta, Marc Schlegel (Jefferson Lab)
TL;DR
This paper reviews the Wandzura-Wilczek relation for g_2, highlighting its breaking by twist-3 terms and discussing implications for experimental data interpretation and measurement strategies.
Contribution
It clarifies the origin of the Wandzura-Wilczek relation breaking and connects it with Transverse Momentum Dependent factorization, providing insights for experimental analysis.
Findings
The Wandzura-Wilczek relation is broken by two twist-3 terms.
Experimental data shows a 20-40% breaking of the relation.
Guidelines for measuring individual twist-3 contributions.
Abstract
We review the study the Wandzura-Wilczek relation for the structure function g_2, with a particular attention on the connection with the framework of Transverse Momentum Dependent factorization. We emphasize that the relation is broken by two distinct twist-3 terms. In the light of these findings, we clarify what can be deduced from the available experimental data on g_2, which indicate a breaking of the order 20-40%, and how to individually measure the twist-3 terms.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsEpilepsy research and treatment