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One-Loop Factorization of the Nucleon g_2-Structure Function in the Non-Singlet Case

Xiangdong Ji·Wei Lu·Jonathan Osborne·Xiaotong Song
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Abstract

We consider the one-loop factorization of the simplest twist-three process: inclusive deep-inelastic scattering of longitudinally-polarized leptons on a transversely-polarized nucleon target. By studying the Compton amplitudes for certain quark and gluon states at one loop, we find the coefficient functions for the non-singlet twist-three distributions in the factorization formula of g_2(x_B,Q^2). The result marks the first step towards a next-to-leading order (NLO) formalism for this transverse-spin-dependent structure function of the nucleon.

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Xiangdong Ji, Wei Lu, Jonathan Osborne, Xiaotong Song. 2000-08-14. One-Loop Factorization of the Nucleon g_2-Structure Function in the Non-Singlet Case. https://doi.org/10.1103/physrevd.62.094016

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