Partonic Transverse Motion in Unpolarized Semi-Inclusive Deep Inelastic Scattering

Abstract

We analyse the role of partonic transverse motion in unpolarized Semi-Inclusive Deep Inelastic Scattering (SIDIS) processes. Imposing appropriate kinematical conditions, we find some constraints which fix an upper limit to the range of allowed kt values and lead to interesting results, particularly for some observables like the azimuthal modulation of the unpolarized SIDIS cross section and the average transverse momentum of the final, detected hadron.Comment: To appear in the Proceedings of the XIX International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2011), April 11-15, 2011, Newport News, VA US