Nucleon hologram with exclusive leptoproduction

Abstract

Hard exclusive leptoproductions of real photons, lepton pairs and mesons are the most promising tools to unravel the three-dimensional picture of the nucleon, which cannot be deduced from conventional inclusive processes like deeply inelastic scattering.

Comments: 9 pages LaTeX, 7 figures, sign in Eq. (16) corrected, Invited talk at the European Workshop "QCD structure of the nucleon", Ferrara, Italy, April 3-6, 2002