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

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

2000-06-12

arxiv.org/abs/hep-ph/0006121v3

Phys.Rev. D62 (2000) 094016

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, revtex4, four figures included, minor changes

Scientific paper

10.1103/PhysRevD.62.094016

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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