Spin structure functions in leptoproduction

Abstract

We discuss a few examples of structure functions for polarized, semi-inclusive scattering processes to show the richness of structure. Then we indicate how polarization and particle production can be used to study the quark and gluon structure of hadrons going further than the well-known parton densities and fragmentation functions.

11 pages, LaTex, uses sprocl.sty and epsfig.sty. To appear in the proceedings of the Conference on Perspectives in Hadronic Physics, Trieste, Italy, 12-16 May, 1997