2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118954Light and charmed hadrons are produced copiously in ep collisions with a centre-of-mass energy of 318 GeV at HERA. Results of the ZEUS Collaboration on pentaquark searches, deuteron and antideuteron production and charmed-meson spectroscopy, obtained using the HERA I data, are summarised.4 pages, 5 figures, to appear in proceedings of ICHEP 2006, Moscow, Russia, July-August 2006High Energy Physics - Experimenttext