2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114920For integer values of its free parameter, an empirical formula reproduces fairly well the mass values of the $μ$ and $τ$ leptons as if they were excited states of the electron. Trident production might possibly be due to constituent collisions.4 pages, 2 figuresHigh Energy Physics - Phenomenologytext