2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171650We study the nature of the new charm and charmonium like states observed in the last few years, using a constituent quark model with an screened confinement potential. In the open charm sector we discuss different options for the $D_{sJ}(2860)$ including tetraquark configurations. In the hidden charm sector the new Y(4360) and Y(4660) are interpreted as $1^{--}$ states. The influence in the puzzling 3940 MeV region of multiquark configuration is discussed.Parallel talk at ICHEP08, Philadelphia, USA, July 2008. 5 pages, LaTeXHigh Energy Physics - Phenomenologytext