Spin dependence of diffractive DIS

Abstract

I review the recent progress in the theory of s-channel helicity nonconservation (SCHNC) effects in diffractive DIS including the unitarity driven demise of the Burkhardt-Cottingham sum rule and strong scaling departure from the Wandzura-Wilczek relation.

Comments: 3 pages, 3 figures, uses npb.sty (attached), a contribution to the Proceedings of DIS'99, April 99, Zeuthen, Germany