Prompt Photon Production in Polarized Hadron Collisions
  We consider spin asymmetries for prompt photon production in collisions of longitudinally polarized hadrons. This reaction will be a key tool at the BNL-RHIC pp collider for determining the gluon spin density in a polarized proton. We study the effects of QCD corrections, such as all-order soft-gluon `threshold' resummations. 
Werner Vogelsang (RIKEN-BNL Research Center)