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arXiv · hep-ph/9308263

Q^2-Dependence of the Proton's G_1 Structure Function Sum Rule

Xiangdong Ji·Peter Unrau
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Abstract

We study the $Q^2$ variation of the first moment of the nucleon's spin-dependent structure function $G_1$. As $Q^2 \rightarrow 0$ the moment is determined by the low energy theorem for Compton scattering. In the deep-inelastic region the moment is calculated using twist expansion to order $1/Q^2$. Based on these limits, we construct a formula which smoothly interpolates between the two regions.

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Xiangdong Ji, Peter Unrau. 1993-11-17. Q^2-Dependence of the Proton's G_1 Structure Function Sum Rule. https://doi.org/10.1016/0370-2693(94)91035-9

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