Spin Structure of the Proton and Large p_T Processes in Polarized pp   Collisions
  QCD motivated polarized parton distributions, evolved directly in x-space, are used to predict rates for prompt photon and Jet production at RHIC and HERA-N center of mass energies. Various scenarios for the polarized gluon distributions are considered and compared, and the possibility of using large p_T processes in polarized pp collision experients to choose between them is analyzed. 
L. E. Gordon and G. P. Ramsey