2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42226There is new experimental evidence which may be interpreted as a small departure from quark-lepton universality. We propose to understand this as the result of a hierarchy of mass scales in analogy to $m_u, m_d << Λ_{QCD}$ for strong isospin. We show $(G_F)^{NC}_{lq} < (G_F)^{CC}_{lq} < (G_F)^{CC}_{ll} < (G_F)^{NC}_{ll}$ in principle, but all are still approximately equal. New physics is predicted at the TeV scale.3 pages, talk by E. Ma at XXIII ENFPC, Aguas de Lindoia, Brazil (Oct 2002)High Energy Physics - Phenomenologytext