2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142683The evidence for the existence of mesons with exotic quantum numbers and of hybrid candidates with non-exotic quantum numbers is critically reviewed, including candidates with hidden charm. Aims and methods of future searches for hybrid mesons are briefly discussed.Pleanry talk at Hadron07, Frascati, Italy, October 8-12, 2007High Energy Physics - Phenomenologytext