SPIN EFFECTS WITH POLARIZED PROTONS AT RHIC

We show that the use of RHIC as a polarized pp collider with a high designed luminosity will allow various interesting polarization studies. In particular, as we will see by considering several different reactions, this can help us to pin down the gluon polarized distribution function, to give a better insight for the u- and d-quarks polarization, to make dynamical tests of the Standard Model and to detect the possible existence of subconstituents.