First glances at the transversity parton distribution through dihadron   fragmentation functions
  We present first observations of the transversity parton distribution based on an analysis of pion-pair production in deep inelastic scattering off transversely polarized targets. The extraction of transversity relies on the knowledge of dihadron fragmentation functions, which we take from electron-positron annihilation measurements. This is the first attempt to determine the transversity distribution in the framework of collinear factorization. 
Alessandro Bacchetta (U. Pavia and INFN Pavia), A. Courtoy (INFN   Pavia), Marco Radici (INFN Pavia)
hep-ph hep-ex