Higgs - mu tau in Abelian and non-Abelian flavor symmetry models

摘要

We study lepton flavor violating Higgs decays in two models, with the recently found hint for Higgs -> mu tau at CMS as a benchmark value for the branching ratio. The first model uses the discrete flavor symmetry group A(4), broken at the electroweak scale, while the second is renormalizable and based on the Abelian gauge group L mu - L-tau. Within the models we find characteristic predictions for other non-standard Higgs decay modes, charged lepton flavor violating decays and correlations of the branching ratios with neutrino oscillation parameters. (C) 2015 The Authors. Published by Elsevier B.V.