How to Study Quark Spin without Spin
Abstract
I review the most important single- and double-spin asymmetries that allow for the extraction of transversity and other chiral-odd and/or T-odd parton densities, necessary to explore the partonic content and the spin structure of the nucleon. With particular reference to the proposed GSI-HESR facility, I report on some Monte-Carlo simulations of cross sections and spin asymmetries for (un)polarized Drell-Yan with protons and antiprotons at the proposed kinematics for this future facility.
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