arXiv:hep-ph/9909300·v1·High Energy Physics — Phenomenology
Twist-3 polarized structure functions
Jiro Kodaira (1)🇯🇵 · Kazuhiro Tanaka (2) ((1) Hiroshima Univ., (2) Juntendo Univ.)🇯🇵
Abstract
We review the nucleon's twist-3 polarized structure functions from the viewpoint of gauge invariant, nonlocal light-cone operators in QCD. We discuss a systematic treatment of the polarized structure functions and the corresponding parton distribution functions. We emphasize unique features of higher twist distributions, and the role of the QCD equations of motion to derive their anomalous dimensions for Q^2-evolution.
Comments: 6 pages LaTeX, talk given at the QCD 99 Euroconference, Montpellier, July 7-13, 1999