2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41188We investigate the production, signatures and backgrounds of a pair of heavy-exotic charged leptons and a heavy-exotic neutrino together with the exotic charged lepton in the framework of the vector singlet model, vector doublet model, and fermion-mirror-fermion model, at the CERN Large Hadron Collider (LHC). We still show that the cross-sections for the case of the production of a pair of heavy exotic leptons are competitive with the ones for the single production of exotic leptons.6 pages and 7 eps-figuresHigh Energy Physics - Phenomenologytext