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

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.

14 pages, revtex4, four figures included, minor changes

References in corpus (1)

• Diffraction driven steep rise of spin structure function $g_{LT}=g_1+g_2$ at small x and DIS sum rules

Cited by in corpus (12)

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• The Singlet g_2 Structure Function in the Next-to-Leading Order
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• Delta-to-N-gamma Coulomb Quadrupole Amplitude in PQCD
• An Analysis of the Next-to-Leading Order Corrections to the g_T(=g_1+g_2) Scaling Function
• Generalized Parton Distributions and the Spin Structure of the Nucleon
• One-Loop Corrections of Single Spin Asymmetries at Twist-3 in Drell-Yan Processes
• One-Loop Corrections of Single Spin Asymmetries in Semi-Inclusive DIS
• The QCD Coupling and Parton Distributions at High Precision