Single Spin Asymmetries in Semi-Inclusive Electroproduction: Access to   Transversity
  We discuss the quark transversity distribution function and a possible way to access it through the measurement of single spin azimuthal asymmetry in semi-inclusive single pion electroproduction on a transversely polarized target. 
K.A. Oganessyan, N. Bianchi, E. De Sanctis, W.-D. Nowak