2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40475Bilepton masses in the 3-3-1 models and the recently announced E821 experiment result are discussed. We get bounds on the bilepton masses 243 GeV $\leq M_Y \leq $ 357 GeV in the minimal model and 70 GeV $\leq M_Y \leq $ 115 GeV in the model with right-handed neutrinos.Latex, 4 pages, 2 figures. Format changed in v2High Energy Physics - PhenomenologyAstrophysicsHigh Energy Physics - ExperimentAccelerator Physicstext