Generalized Parton Distributions of the Pion

Abstract

Off-forward structure functions of the pion are investigated in twist-two and twist-three approximation. A simple model is used for the pion, which allows to introduce finite size effects, while preserving gauge invariance. Results for the imaginary parts of the gamma^* pi -> gamma^* pi off-forward amplitude and of the structure functions are presented. Generalized Callan-Gross relations are obtained.

Comments: 4 pages, 5 figures, LaTeX, uses espcrc2.sty (included), presented at QCD03 Conference, Montpellier, France, July 2003