QCD Sum Rules and Virtual Compton Scattering

Abstract

In this talk I report on recent progress in a few areas closely related to the virtual Compton scattering studies. In particular, I discuss the quark-hadron duality estimate of the ${\gamma }^{\ast }p\to {\Delta }^{+}$ transition, QCD sum rule calculation of the $\gamma {\gamma }^{\ast }\to {\pi }^0$ form factor, and application of perturbative QCD to deeply virtual Compton scattering at small $t$.

Comments: Talk at the Workshop on Virtual Compton Scattering, Clermont-Ferrand, France, June 26-29,1996