Prospects for light charged scalars in a three-Higgs-doublet model with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Z</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math> symmetry

Fermion mass effects on Γ ( Z → bb̄ + a light Higgs ) in a two - Higgs - doublet model

Fermion mass effects on Γ(Z → b ¯ b + a light Higgs) in a two-Higgs-doublet model Abstract Large fermion mass effect on the Yukawa process Z → b ¯ b → b ¯ bh(A) in the entire range of the neutral Higgs boson masses is found. It is particularly important for light Higgs bosons, which are still not excluded experimentally in a general two-Higgs-doublet model. The light Higgs bosons in the context...

Top Quark Decay into Charged Higgs Boson in a General Two-higgs-doublet Model: Implications for the Tevatron Data

We analyze the unconventional top quark decay mode t → Hb at the quantum level within the context of general Two-Higgs-Doublet models by including the full electroweak effects from the Yukawa couplings. The results are presented in the on-shell renormalization scheme with a physically well motivated definition of tanβ. While the QCD corrections have been taken into account in the current experi...

Higgs Model without Elementary Scalars

A model of interaction of massless vector and spinor fields is considered. With the use of Bogolyubov quasi-average method we study a possibility of a dy-namical breaking of the initial symmetry. Assuming the existence of effective cutoff Λ, we show, that there exists a solution, which breaks gauge symmetry of the theory. Instead of Higgs scalars fermion-antifermion tachion bound states are pre...

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.