2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201710The spin structure of the nucleon is studied in a light-cone description of the nucleon where the Fock expansion is truncated to consider only valence quarks. Transverse momentum dependent parton distributions and transverse-spin densities, defined through the generalized parton distributions in the impact-parameter space, are investigated as new tools to reveal the spin-spin and spin-orbit correlations for different quark and nucleon polarizations.Invited talk at "6th International Conference on Perspectives in Hadronic Physics (Hadron 08)", Trieste, Italy, 12-18 May 2008; submitted to AIP Conf.ProcHigh Energy Physics - Phenomenologytext