Abstract
The PHENIX and STAR collaborations at Brookhaven National Laboratory will probe the spin structure of the proton in polarized proton-proton collisions at the Relativistic Heavy Ion Collider (RHIC). Initial data taking is planned for 2001 with polarized proton beams at s=200 GeV. Double spin asymmetries with longitudinal polarization will give access to the proton gluon polarization distributions and parity violating single spin asymmetries will provide information on quark and anti-quark polarizations. Measurements of transverse spin asymmetries will permit the extraction of the currently unknown transversity distributions δq. We present first studies of experimental sensitivities for single transverse spin asymmetries at RHIC.
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