2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/91716This note discusses the motion of a charged particle in the magnetic dipole field and a modified Barut's lepton mass formula. It is shown that a charged particle in the magnetic dipole filed has no bound states, which means that Barut's lepton mass formula may have no physical basis.4 pages, no figures, LatexQuantum Physicstext