QCD SUM-RULES AND COMPTON-SCATTERING

We extend QCD sum rule analysis to moderate energy fixed-angle Compton scattering. In this kinematic region there is a strong similarity to the sum rule treatment of electromagnetic form factors, although the f our-point amplitude requires a modification of the Borel transform. To illustrate our method, we derive the sum rules for helicity amplitude s in pion Compton scattering and estimate their large-t behavior in th e local duality approximation.