Azimuthal asymmetries at CLAS: Extraction of e(x) and prediction of AUL

First information on the chirally odd twist-3 proton distribution function e(x) is extracted from the azimuthal asymmetry, ALU , in the electro-production of pions from deeply inelastic scattering of longitudinally polarized electrons off unpolarized protons, which has been recently measured by CLAS collaboration. Furthermore parameter-free predictions are made for azimuthal asymmetries, AUL, from scattering of an unpolarized beam on a polarized proton target for CLAS kinematics.