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Abstract: The Nachtmann moment is employed to study the contribution of twist-3operator to the nucleon spin structure functions. Target mass corrections tothe Cornwall-Norton moments of the spin structure functions $g {1,2}$ arediscussed. It is found that the corrections play a sizeable role to thecontribution of the twist-3 $\tilde d 2$ extracted from the Cornwall-Nortonmoments.



Autor: Y. B. Dong

Fuente: https://arxiv.org/







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