Azimuthal Spin Asymmetries in Semi-Inclusive Production from Positron-Proton Scattering

Abstract

The recent measurements of azimuthal single spin asymmetries by the HERMES collaboration at DESY may shed some light on presently unknown fragmentation and distribution functions. We present a study of such functions and give some estimates of weighted integrals directly related to those measurements.

Comments: 10 pages, 5 figures, comments added, figures changed, revised version to be published on Phys. Lett. B