Perturbative and nonperturbative aspects of azimuthal asymmetries in polarized ep

Abstract

We discuss the possibilities of testing of perturbative quantum chromodynamics through azimuthal asymmetries in polarized ep in the context of future collider and fixed target facilities, such as Electron Ion Collider and TESLA-N.

Comments: 4 pages, Latex. Talk presented at the 15th International Spin Physics Symposium, Spin 2002, Brookhaven National Laboratory, September 9-14, 2002