2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42591We analyze the dominant decay mechanisms in the radiative decays D -> V gamma, D -> P(V) l+ l-, D -> gamma gamma, D -> l+ l- gamma, and we discuss possible chances to observe the effects of new physics in these decays. Then we comment on Cabibbo allowed D -> K pi gamma decays with nonresonant K pi and we probe the role of light vector mesons in these decays.Invited talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003 (eConf C0304052). 4 pages LaTeXHigh Energy Physics - Phenomenologytext