process and multi-Higgs doublet model

April 1997 b → s l l process and multi - Higgs doublet model

Rare b decay processes are analyzed in the multi-Higgs doublet model. Taking account of the constraint from the b → s γ process, the branching ratio and the forward-backward asymmetry of the final leptons for the b → s ll process are calculated. It is shown that the branching ratio can be a few times larger than the standard model prediction and the asymmetry can be significantly different from...

Simple Two Higgs Doublet Model

FCNCs in supersymmetric multi-Higgs doublet models

We conduct a general discussion of supersymmetric models with three families in the Higgs sector. We analyse the scalar potential, and investigate the minima conditions, deriving the mass matrices for the scalar, pseudoscalar and charged states. Depending on the Yukawa couplings and the Higgs spectrum, the model might allow the occurrence of potentially dangerous flavour changing neutral curren...

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