Higgs Couplings to $t$, $b$, and $\tau$ with Flavor Symmetry

Abstract

Experimental study at LHC of the possible Higgs boson should soon provide accurate estimates of the Yukawa couplings $Y_{H\bar{f}f}$ for $f=t,b,\tau$. In the presence of a non-abelian discrete flavor symmetry $G_F$ (e.g. T') the usual prediction that $Y_{H\bar{f}f} \propto m_f$ should be inexact, and departures therefrom will provide through $G_F$ valuable input to an improved derivation of the quark and lepton mixing matrices.