Polarized GPDs in pions and kaons electroproduction. Tranversity effects
  We analyze the electroproduction of pseudoscalar mesons within the handbag approach. To investigate these reactions, we consider the leading-twist contribution together with the transversity twist-3 effects that are crucial in the description of experimental data. Our results on the cross section are in agreement with experiment. We present our predictions for spin observables. 
S. V. Goloskokov
hep-ph