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HK: Fachverband Hadronen und Kerne

HK 5: Hadron Structure and Spectroscopy II

HK 5.1: Invited Group Report

Monday, March 16, 2009, 14:00–14:30, H-ZO 30

The spin strucure of the nucleon — •Mauro Anselmino — University of Torino & INFN, Torino, Italy

The study of the spin structure of the nucleon has made impressive progress in the last years. In particular the transverse structure of the nucleon has received much attention, not only regarding spin but also the intrinsic motion of partons inside protons and neutrons and their space distribution. Spin and intrinsic, or orbital, motion might be strictly correlated. New data have been released, which have prompted new theoretical extraction of transverse spin dependent distribution and fragmentation functions. The measurement and understanding of transverse single spin asymmetries has much progressed as well. A review of the most recent new results is presented.