Structure Functions and the Spin of the Nucleon: From HERMES to COMPASS
Abstract
The HERMES and SMC experiments have determined the contribution of different quark flavors to the nucleon spin in a large range of Bjorken-x via semi-inclusive deep inelastic scattering. The main goal of the COMPASS experiment is to measure the gluon polarization in the nucleon. In all experiments a polarized lepton is scattered off a polarized nucleon. Latest results from HERMES and perspectives for COMPASS running in 2001 and beyond are presented.
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