Lepton masses and mixing in a two-Higgs-doublet model

Simple Two Higgs Doublet Model

2HDMC – a two Higgs Doublet Model Calculator

We present the program 2HDMC and how it can be used to explore the physics of general CP-conserving two Higgs doublet models. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Decay in Two Higgs Doublet Model

The rare K + → π + ν ¯ ν decay is investigated in the context of type II two-Higgs-doublet model (2HDM). By using the existing experimental data of the branching ratio, restrictions on the free parameters of the model m H , and tanβ are obtained: 0.7 ≤ tanβ ≤ 0.8, and 500GeV ≤ m H ≤ 700GeV .

In the Two - Higgs Doublet - Model

Phenomenology of the two Higgs doublet sector of a quark-lepton symmetric model.

In the simplest examples of models with a discrete quark-lepton symmetry, an electroweak symmetry breaking sector with more than one Higgs doublet is necessary to obtain the correct mass relations between quarks and leptons. A two Higgs doublet model version has flavour-nonconserving Yukawa couplings, which are proportional to the masses of the quark-lepton symmetric partners of the fermions. W...