Title: What do we know about the nucleon 3D structure in momentum space?

Speaker: Prof. Mauro Anselmino, University of Torino and INFN Torino, Italy

Abstract: The nucleons, neutrons and protons, form the almost totality of the visible matter in the Universe. They are composite objects, made of quarks and gluons, (partons) which interact according to the Quantum Chromo Dynamics rules. Despite many years of investigation, the partonic 3-dimensional nucleon structure is still very mysterious. The motion of partons inside the nucleon, their spatial distribution, the way in which their orbital motion and spin combine into the nucleon spin, are not yet clear. Progress has been made lately, both in theory and experiments, and much more is expected. A summary of the situation, with emphasis on the momentum distribution of partons, is presented.