2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/144174The charmonium-like states, Y(4260), Y(4350), produced via initial state radiation, as well as the X(3872), and Y(3940), produced in B meson decays from the BABAR B-factory are reviewed. These mesons do not seem consistent with conventional charmonium models, and several alternate hypotheses have been proposed to explain these new discoveries.based on a talk given at the Hadron07 conferenceHigh Energy Physics - Experimenttext