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arXiv · hep-ph/9409416

Polarized Structure Functions: Theory and Phenomenology

Stefano Forte
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Abstract

We review the theory of polarized structure functions measured in deep-inelastic lepton-nucleon scattering, focusing on the most recent developments. We concentrate on the structure function $g_1$, emphasizing the phenomenological problems related to the extraction of the proton and neutron $g_1(x,Q^2)$ from the data, and to the determination of its moments, especially the first moment. In particular, we discuss the theoretical and experimental uncertainties due to the $Q^2$ dependence of the data, small and large $x$ extrapolations, QCD loop corrections, higher twist corrections, and, in connection to neutron experiments, nuclear effects. We also discuss the current status of the sum rules satisfied by the first moment of $g_1$ and their theoretical interpretation.

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Stefano Forte. 1994-09-30. Polarized Structure Functions: Theory and Phenomenology. https://arxiv.org/abs/hep-ph/9409416

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