  The 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
\theta_{W}} = 115.3 GeV $. Here $ m(W) $ is the mass of the charged gauge boson
and $ \theta_{W} $ is the Weinberg angle.

High Energy Physics - Theory