2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176594We consider the production of lepton pairs with intermediate invariant masses, in relativistic nuclear collisions. Thermal sources are briefly discussed, as well as a newer production mechanism which involves jet-plasma interactions. Estimates for high p_T lepton pairs are provided.Talk given at the 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear CollisionsHigh Energy Physics - PhenomenologyNuclear Theorytext