Transversity in Drell-Yan process of polarized protons and antiprotons   in PAX experiment
  Estimates are given for the double spin asymmetry in lepton-pair production from collisions of transversely polarized protons and antiprotons for the kinematics of the recently proposed PAX experiment at GSI on the basis of predictions for the transversity distribution from the chiral quark soliton model. 
A.V. Efremov, K. Goeke and P. Schweitzer