Probing the Nucleon's Transversity Via Two-Meson Production in Polarized   Nucleon-Nucleon Collisions
  We explore the possibility of probing the nucleon's transversity distribution $\delta q(x)$ through the final state interaction between two mesons ($\pi^+\pi^-$, $\pi K$, or $K\bar K$) produced in transversely polarized nucleon-nucleon collisions. We present a single spin asymmetry and estimate its magnitude under some assumptions for the transversity distribution function and the unknown interference fragmentation function. 
Jian Tang (MIT,LNS)