34 citations · 87 across the 14 of their papers we have counts for
15 papers
Scrutinizing the Mass Matrices in Three-Higgs-Doublet Models with Generalized CP Symmetries
Duarte D. Correia, Jorge C. Romao, Joao P. Silva
We investigate three-Higgs-doublet models with a softly broken generalized CP (GCP) symmetry, focusing on the Yukawa sector and its compatibility with quark flavor data. We first s…
Machine Learning insights on the Z3 3HDM with Dark Matter
Fernando Abreu de Souza, Rafael Boto, Miguel Crispim Romão +2
We study a 3-Higgs Doublet Model (3HDM) with an imposed Z3 symmetry, allowing for two Inert scalar doublets and one active Higgs doublet. The WIMP dark matter candidates correspond…
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…
New features in the Z2xZ2 3HDM two component DM model
Jorge C. Romão, Rafael Boto, Pedro N. Figueiredo +1
We investigate the constraints and phenomenology of a three Higgs doublet model (3HDM) with a symmetry, featuring two inert scalar doublets that give rise to a two-c…
Surveying the complex three Higgs doublet model with Machine Learning
Rafael Boto, João A. C. Matos, Jorge C. Romão +1
The couplings of the 125 GeV Higgs are being measured with higher precision as the Run 3 stage of LHC continues. Models with multiple Higgs doublets allow potential deviations from…
Machine Learning in the 2HDM2S model for Dark Matter
Rafael Boto, Tiago P. Rebelo, Jorge C. Romão +1
We introduce a two real scalar singlet extension of the two Higgs doublet model. We study the vacuum structure, the bounded from below conditions, the restrictions from the oblique…
Unearthing large pseudoscalar Yukawa couplings with Machine Learning
Fernando Abreu de Souza, Rafael Boto, Miguel Crispim Romão +3
With the Large Hadron Collider's Run 3 in progress, the 125 GeV Higgs boson couplings are being examined in greater detail, while searching for additional scalars. Multi-Higgs fram…
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…
Large pseudoscalar Yukawa couplings in the complex 3HDM
Rafael Boto, Luis Lourenco, Jorge C. Romão +1
As LHC's Run3 unfolds, we peer deeper into the couplings of the 125GeV Higgs () and also test for extra scalars. Even before such extra scalars are found, one can probe th…
Novel two component dark matter features in the 3HDM
Rafael Boto, Pedro N. Figueiredo, Jorge C. Romão +1
We discuss the constraints and phenomenology of the three Higgs doublet model (3HDM) with two inert scalars, originating two dark matter (DM) particles. We elucida…
Lepton flavour violation at high energies: the LHC and a Linear Collider
A. M. Teixeira, A. Abada, A. J. R. Figueiredo +1
We discuss several manifestations of charged lepton flavour violation at high energies. Focusing on a supersymmetric type I seesaw, considering constrained and semi-constrained sup…
Potential of a Linear Collider for Lepton Flavour Violation studies in the SUSY seesaw
A. J. R. Figueiredo, A. Abada, J. C. Romao +1
We study the potential of an e+- e- Linear Collider for charged lepton flavour violation studies in a supersymmetric framework where neutrino masses and mixings are explained by a…
A_4-based neutrino masses with Majoron decaying dark matter
J. N. Esteves, F. R. Joaquim, A. S. Joshipura +3
We propose an A_4 flavor-symmetric SU(3)xSU(2)xU(1) seesaw model where lepton number is broken spontaneously. A consistent two-zero texture pattern of neutrino masses and mixing em…
Model Independent Higgs Boson Mass Limits at LEP
A. Lopez-Fernandez, J. C. Romão, F. de Campos +1
We derive model-independent constraints on Higgs mass and couplings from associated signals for higher masses, accessible at LEP2. This work is motivated by the fact that, in many…
Detection of Intermediate Mass Higgs Bosons from Spontaneously Broken R Parity Supersymmetry
J. C. Romão, J. L. Diaz-Cruz, F. de Campos +1
The Higgs sector in spontaneously broken R Parity supersymmetry (RPSUSY) shows interesting features that require new search techniques. Both the mass spectrum and production rates…