Target mass corrections and twist-3 in the nucleon spin structure functions
نویسنده
چکیده
The Nachtmann moment is employed to study the contribution of twist-3 operator to the nucleon spin structure functions. Target mass corrections to the CornwallNorton moments of the spin structure functions g1,2 are discussed. It is found that the corrections play a sizeable role to the contribution of the twist-3 d̃2 extracted from the Cornwall-Norton moments. PACS: 13.60.Hb, 12.38.Aw, 12.38Cy; 12.38.-t; 13.60.Fz, 12.40.Nn
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