89 citations · 449 across the 23 of their papers we have counts for
24 papers
Reassessing CP Violation in the C2HDM with Machine Learning
Rafael Boto, Karim Elyaouti, Duarte Fontes +5
We provide a study of the parameter space of the complex 2-Higgs Doublet Model (C2HDM), focusing on signs of large CP-violating couplings of the 125 GeV Higgs boson with the fermio…
FeynMaster Manual
Duarte Fontes, Jorge C. Romão
We present the manual for FeynMaster 2.1, a multitasking software for particle physics studies. This new version includes additional functions and is compatible with recent version…
Impact of New Experimental Data on the C2HDM: the Strong Interdependence between LHC Higgs Data and the Electron EDM
Thomas Biekötter, Duarte Fontes, Margarete Mühlleitner +3
The complex two-Higgs doublet model (C2HDM) is one of the simplest extensions of the Standard Model with a source of CP-violation in the scalar sector. It has a symm…
Relevance of one-loop SMEFT matching in the 2HDM
Supratim Das Bakshi, Sally Dawson, Duarte Fontes +1
The Two-Higgs Doublet Model (2HDM) is a well understood alternative to the Standard Model of particle physics. If the new particles included in the 2HDM are at an energy scale much…
Is the HEFT matching unique?
Sally Dawson, Duarte Fontes, Carlos Quezada-Calonge +1
Physics beyond the Standard Model (BSM) can be described in a consistent and general way through the Higgs Effective Field Theory (HEFT). Measurements of model-independent HEFT coe…
Matching the 2HDM to the HEFT and the SMEFT: Decoupling and Perturbativity
Sally Dawson, Duarte Fontes, Carlos Quezada-Calonge +1
We consider the 2 Higgs Doublet Model (2HDM) and compare two effective field theory (EFT) approaches to it, according to whether the heavy degrees of freedom are integrated out bef…
The vertex in a left-right model
Duarte Fontes, Darius Jurčiukonis, Luís Lavoura
We consider the one-loop corrections to the vertex in a -conserving left--right model (LRM), . a model with gauge group .…
Double insertions of SMEFT operators in gluon fusion Higgs boson production
Konstantin Asteriadis, Sally Dawson, Duarte Fontes
Deviations from the Standard Model (SM) can be parameterized in terms of the SM effective field theory (SMEFT), which is typically truncated at dimension-6. Including higher dimens…
Role of dimension-eight operators in an EFT for the 2HDM
Sally Dawson, Duarte Fontes, Samuel Homiller +1
The Standard Model effective field theory (SMEFT) is the tool of choice for studying deviations of Higgs couplings from the Standard Model predictions. The SMEFT is an expansion in…
The one-loop impact of a dependent mass: the role of in the C2HDM
Duarte Fontes, Jorge C. Romão
In the complex 2-Higgs-Doublet Model (C2HDM), the mass of the heaviest neutral scalar is usually chosen as a derived parameter. We investigate one-loop corrections to $…
Multi-Higgs Models: model building, phenomenology and renormalization
Duarte Fontes
In this thesis, we investigate several aspects of models with a multiplicity of Higgs bosons. We start by focusing on models with two Higgs doublets. We claim that one of the most…
Renormalization of the C2HDM with FeynMaster 2
Duarte Fontes, Jorge C. Romão
We present the one-loop electroweak renormalization of the CP-violating 2-Higgs-Doublet Model with softly broken symmetry (C2HDM). The existence of CP violation in t…
Leaks of CP violation in the real two-Higgs doublet model
Duarte Fontes, Maximilian Löschner, Jorge C. Romão +1
We discuss the symmetric two Higgs doublet model with a real soft breaking term (real 2HDM). We explain in detail why it is not tenable to assume CP conservation in the scala…
One-loop corrections to the vertex in models with scalar doublets and singlets
Duarte Fontes, Luis Lavoura, Jorge C. Romao +1
We study the one-loop corrections to the vertex in extensions of the Standard Model with arbitrary numbers of scalar doublets, neutral scalar singlets, and charged scal…
FeynMaster: a plethora of Feynman tools
Duarte Fontes, Jorge C. Romão
FeynMaster is a multi-tasking software for particle physics studies. By making use of already existing programs (FeynRules, QGRAF, FeynCalc), FeynMaster automatically generates Fey…
Electroweak Breaking and Higgs Boson Profile in the Simplest Linear Seesaw Model
Duarte Fontes, Jorge C. Romao, Jose W. F. Valle
We examine the simplest realization of the linear seesaw mechanism within the Standard Model gauge structure. Besides the standard scalar doublet, there are two lepton-number-carry…
The C2HDM revisited
Duarte Fontes, Margarete Mühlleitner, Jorge C. Romão +3
The complex two-Higgs doublet model is one of the simplest ways to extend the scalar sector of the Standard Model to include a new source of CP-violation. The model has been used a…
CP violation in 2HDM and EFT: the ZZZ vertex
Hermès Bélusca-Maïto, Adam Falkowski, Duarte Fontes +2
We study the CP violating ZZZ vertex in the two-Higgs doublet model, which is a probe of a Jarlskog-type invariant in the extended Higgs sector. The form factor is evaluate…
Higgs EFT for 2HDM and beyond
Hermès Bélusca-Maïto, Adam Falkowski, Duarte Fontes +2
We discuss the validity of the Standard Model Effective Field Theory (SM EFT) as the low-energy effective theory for the two-Higgs-doublet Model (2HDM). Using the up-to-date Higgs…
Large pseudo-scalar components in the C2HDM
Duarte Fontes, Jorge C. Romão, Rui Santos +1
We discuss the CP nature of the Yukawa couplings of the Higgs boson in the framework of a complex two Higgs doublet model (C2HDM). After analysing all data gathered during the Larg…
Undoubtable signs of CP-violation in Higgs decays at the LHC run 2
Duarte Fontes, Jorge C. Romão, Rui Santos +1
With the discovery of the Higgs boson at the Large Hadron Collider the high energy physics community's attention has now turned to understanding the properties of the Higgs boson,…
Large pseudoscalar Yukawa couplings in the complex 2HDM
Duarte Fontes, Jorge C. Romão, Rui Santos +1
We start by presenting the current status of a complex flavour conserving two-Higgs doublet model. We will focus on some very interesting scenarios where unexpectedly the light Hig…
in the complex two Higgs doublet model
Duarte Fontes, J. C. Romão, João P. Silva
The latest LHC data confirmed the existence of a Higgs-like particle and made interesting measurements on its decays into , , , , and .…
A reappraisal of the wrong-sign coupling and the study of
Duarte Fontes, J. C. Romão, João P. Silva
It has been pointed out recently that current experiments still allow for a two Higgs doublet model where the coupling () is negative; a sign opposite to t…