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Contributor: S. Pate.
The polarized distributions and of the nucleon have been measured at HERMES, and will be published soon. With the particle identification upgrade now complete, HERMES will additionally measure over the next two years, while improving the precision of the and values. Further, HERMES will perform an integral measurement of to % over the next two years. In a complimentary spin program, the Relativistic Heavy Ion Collider (RHIC) will provide a measurement of the distribution by approximately 2002, and later measure the polarized quark and anti-quark distributions.
Items identified as needing theoretical study include: