Transversity single spin asymmetries

Abstract

The theoretical aspects of two leading twist transversity single spin asymmetries, one arising from the Collins effect and one from the interference fragmentation functions, are reviewed. Issues of factorization, evolution and Sudakov factors for the relevant observables are discussed. These theoretical considerations pinpoint the most realistic scenarios towards measurements of transversity.

Comments: 6 pages, 5 Postscript figures; Talk presented at DIS2001, Bologna, April 27 - May 1, 2001