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We study Higgs boson properties in a model where three fermionic families of the Standard Model arise from a single generation in (5+1) dimensions. We demonstrate that, in spite of a non-trivial background, properties of the…

High Energy Physics - Phenomenology · Physics 2010-06-22 M. V. Libanov , E. Y. Nugaev

The most general Two Higgs Doublet Model potential without explicit CP violation depends on 10 real independent parameters . Excluding spontaneous CP violation results in two 7 parameter models. Although both models give rise to 5 scalar…

High Energy Physics - Phenomenology · Physics 2017-08-23 Lars Brucher , Rui Santos

Extended scalar and fermion sectors offer new opportunities for generating the observed strong hierarchies in the fermion mass and mixing patterns of the Standard Model (SM). In this work, we elaborate on the prospects of a particular…

High Energy Physics - Phenomenology · Physics 2019-06-17 A. E. Cárcamo Hernández , Sergey Kovalenko , Roman Pasechnik , Ivan Schmidt

We look for minimal extensions of Standard Model with vector like fermions leading to precision unification of gauge couplings. Constraints from proton decay, Higgs stability and perturbativity are considered. The simplest models contain…

High Energy Physics - Phenomenology · Physics 2018-05-17 Biplob Bhattacherjee , Pritibhajan Byakti , Ashwani Kushwaha , Sudhir K Vempati

We analyse a class of two Higgs doublet models where flavour-changing neutral currents (FCNC) are present at tree level in a mixing-suppressed manner. In this class of models, because of a discrete symmetry imposed on the lagrangian, the…

High Energy Physics - Phenomenology · Physics 2014-10-29 Miguel Nebot

The most general Two Higgs Doublet Model potential without explicit CP violation depends on 10 real independent parameters. Excluding spontaneous CP violation results in two 7 parameter models. Although both models give rise to 5 scalar…

High Energy Physics - Phenomenology · Physics 2009-01-07 L. Brücher , R. Santos

We examine a dual theory of a Supersymmetric Standard Model(SSM) in terms of an $SU(3)_C$ gauge group. In this scenario, it is naturally understood that at least one quark (the top quark) should be heavy, i.e., almost the same order as the…

High Energy Physics - Phenomenology · Physics 2011-01-13 Nobuhiro Maekawa

The successful explanation of fermion mixing and of the fermion mass hierarchy by the Dualized Standard Model (DSM) scheme is based on the premises of a fermion mass matrix rotating in generation space with changing scales at a certain…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. Bordes , H. M. Chan , S. T. Tsou

The Hermitian matrix model with general linear symmetry is argued to decouple into a finite unitary matrix model that contains metastable multidimensional lattice configurations and a fermion determinant. The simplest metastable state is a…

High Energy Physics - Theory · Physics 2010-07-20 Chris Belyea

We review the possible role that multi-Higgs models may play in our understanding of the dynamics of a heavy 4th sequential generation of fermions. We describe the underlying ingredients of such models, focusing on two Higgs doublets, and…

High Energy Physics - Phenomenology · Physics 2012-09-27 Shaouly Bar-Shalom , Michael Geller , Soumitra Nandi , Amarjit Soni

We explore a fermionic dark matter model with a possible extension of Standard Model (SM) of particle physics into two Higgs doublet model. Higgs doublets couple to the singlet fermionic dark matter (FDM) through a non renormalisable…

High Energy Physics - Phenomenology · Physics 2022-12-14 Amit Dutta Banik , Debasish Majumdar

Extensions of the Standard Model often come with additional, possibly electroweakly charged Higgs states, the prototypal example being the Two-Higgs-Doublet Model. While collider phenomenology does not exclude the possibility for some of…

High Energy Physics - Phenomenology · Physics 2019-11-18 Florian Domingo , Sebastian Paßehr

In the standard model, the permutation symmetry among the three generations of fundamental fermions is usually regarded to be broken by the Higgs couplings. It is found that the symmetry is restored if we include the mass matrix parameters…

High Energy Physics - Phenomenology · Physics 2020-09-17 T. K. Kuo , S. H. Chiu

Measurements of Higgs boson Yukawa couplings to Standard Model (SM) fermions constrain radiative mass models for those species. Such models, motivated by the observed fermion mass hierarchy, act as foils for the SM tree-level mechanism: we…

High Energy Physics - Phenomenology · Physics 2025-11-13 Lucia Stockdale , Raymond R. Volkas

We {works done in collaboration with C.S.Kim, Yonsei Univ., Seoul, Korea} present some properties of the SM with two Higgs doublets. Unlike the minimal SM, the Yukawa couplings (in the usual ``type II'' model) converge with the increasing…

High Energy Physics - Phenomenology · Physics 2009-09-25 G. Cvetic

We investigate high and low energy implications of a gauge dual description of the Standard Model. The high energy electric theory features gauge dynamics involving only fermionic matter fields, while the low energy magnetic description…

High Energy Physics - Phenomenology · Physics 2024-07-25 Giacomo Cacciapaglia , Francesco Sannino

An extension of the Standard Model is presented that leads to the possible existence of new gauge bosons with masses in the range of a few TeV. Due to the fact that their couplings to Standard Model fermions are strongly suppressed, it is…

High Energy Physics - Phenomenology · Physics 2018-10-31 Carlos Alvarado , Alfredo Aranda

In a model with a gauge group $G_{SM}\otimes U(1)_X$, where $G_{SM} \equiv SU(3)_C \otimes SU(2)_L \otimes U(1)_Y$ is the standard model gauge group and $U(1)_X$ is a horizontal local gauge symmetry, the spectrum of charged fermion masses…

High Energy Physics - Phenomenology · Physics 2016-09-06 E. Garcia-Reyes , A. Hernandez-Galeana , A. Vargas , A. Zepeda

We consider a supersymmetric model that uses partial compositeness to explain the fermion mass hierarchy and predict the sfermion mass spectrum. The Higgs and third-generation matter superfields are elementary, while the first two matter…

High Energy Physics - Phenomenology · Physics 2019-03-19 Yusuf Buyukdag , Tony Gherghetta , Andrew S. Miller

We analyse the constraints and some of the phenomenological implications of a class of two Higgs doublet models where there are flavour-changing neutral currents (FCNC) at tree level but the potentially dangerous FCNC couplings are…

High Energy Physics - Phenomenology · Physics 2015-06-18 F. J. Botella , G. C. Branco , Adrian Carmona , M. Nebot , Leonardo Pedro , M. N. Rebelo