2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/124343The Substandard theory deals with the standard model of leptons, electro-weak gauge bosons and Higgs, excluding the chromodynamics of quarks. The theory gives a geometric and algebraic interpretation of its U(2) symmetry based on the Eguchi-Hanson metric and predicts a Higgs mass $ m(H) = m(W) / \sqrt{sin θ_{W}} = 115.3 GeV $. Here $ m(W) $ is the mass of the charged gauge boson and $ θ_{W} $ is the Weinberg angle.11 pages, Latex, no figuresHigh Energy Physics - Theorytext