2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46835The representation of quark distribution functions in terms of nonlocal operators is combined with a simple diquark spectator model. This allows us to estimate these functions for the nucleon ensuring correct crossing and support properties.7 pages RevTex using epsfig.sty, including 3 figuresHigh Energy Physics - Phenomenologytext