Author/Authors :
A. Brandenburg، نويسنده , , V.V. Khoze، نويسنده , , D. Müller، نويسنده ,
Abstract :
We calculate azimuthal asymmetries and the Callan-Gross R-ratio for semi-exclusive pion production in deep inelastic scattering taking into account higher twist effects. Our results are qualitatively different from the QCD-improved parton model predictions for semi-inclusive deep inelastic scattering.
