2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226559We study the charmonium spectrum including higher spin and exotic states. We use the Sheikholeslami-Wilson (clover) action for $N_f=2$ sea quarks as well as for the charm valence quark. In order to access excited states we apply a variational method with a basis of highly optimized operators.7 pages, 4 figures, Presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, GermanyHigh Energy Physics - Latticetext