2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/165928The physics of charm has become one of the best laboratories exposing the limitations of the naive constituent quark model and also giving hints into a more mature description of hadron spectroscopy. Recent discoveries are a challenge that have revolutionized our understanding of the hadron spectra. In this talk we address the study of many-quark components in charmonium spectra. To make the physics clear we also discuss exotic many-quark systems.Talk given at HADRON '07, Frascati, Italy, October 2007High Energy Physics - Phenomenologytext