On the twist-2 contributions to polarized structure functions

Abstract

The twist--2 contributions to the polarized structure functions in deep inelastic lepton--hadron scattering are calculated including the exchange of weak bosons and using both the operator product expansion and the covariant parton model. A new relation between two structure functions leading to a sequence of new sum rules is found. The light quark mass corrections to the structure functions are derived in lowest order QCD.

Comments: 7 pages Latex, two files and corresponding style files, Contribution to the Proceedings of the International Workshop on Deep Inelastic Scattering, Rome, April, 1996