2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162983BaBar and Belle have recently revived the interest in charmonium spectroscopy, discovering many unexpected resonances. In this review, I'll focus mostly on the states found in B decays and double $\ccbar$. A better understanding of their production mechanism can help to discriminate among models, confirm tentative $J^{PC}$ assignments, and clarify the overall picture.Contribution to Moriond QCD2008 Proceedings, 4 pagesHigh Energy Physics - Experimenttext