Higher-twist analysis of moments of spin structure function

2005/08/18 by A. Deur, Deur, A.
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Electron and X-Ray Spectroscopy Techniques #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Experiment (nucl-ex) #hep-ph #nucl-ex

paper · pdf · doi:10.48550/arxiv.nucl-ex/0508022

arxiv created 2005/08/18 · openalex publication_date 2005/08/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Available analyses on moments of the spin structure function g₁ use different methods and are barely consistent with each other. We present a higher twist analysis of Gamma₁^p using a method consistent with the studies of Gamma₁ⁿ and Gamma₁^(p-n) already published. The twist-4 coefficient f₂ is extracted. One result is that the higher twist coefficients seem to alternate signs: the relatively larger twist-6 contribution is partly suppressed by the twist-4 and twist-8 contributions. The size of twist-6 can be due to the elastic contribution to the moments.

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