59 citations · 70 across the 5 of their papers we have counts for
7 papers · 1 filter
Controlling the Flavour Changing Neutral Couplings of Multi-Higgs Doublets Models through Unitary Matrices
João M. Alves
In this paper, we introduce Unitary Flavour Violation to produce Multi-Higgs Doublets Models where all flavour parameters are contained within three unitary matrices. After that, w…
Spontaneous CP violation and symmetry in two-Higgs-doublet models with flavour conservation
João M. Alves, Francisco J. Botella, Carlos Miró +1
In multi-Higgs-doublet models, requiring simultaneously that (i) CP violation only arises spontaneously, (ii) tree level scalar flavour changing couplings are absent and (iii) the…
Vector-like Singlet Quarks: a Roadmap
João M. Alves, G. C. Branco, A. L. Cherchiglia +5
We review the theory and phenomenology of isosinglet vector-like quarks (VLQs). In recent years, interest in VLQs has been increasing, due to their contributions to new physics eff…
The framework for a common origin of and
João M. Alves, Francisco J. Botella, Gustavo C. Branco +2
We analyse a possible connection between CP violations in the quark and lepton sectors, parametrised by the CKM and PMNS phases. If one assumes that CP breaking arises from complex…
Extending Trinity to the Scalar Sector through Discrete Flavoured Symmetries
João M. Alves, Francisco J. Botella, Gustavo C. Branco +1
We conjecture the existence of a relation between elementary scalars and fermions, making it plausible the existence of three Higgs doublets. We introduce a Trinity Principle (TP)…
Symmetry Constrained Two Higgs Doublet Models
Joao M. Alves, Francisco J. Botella, Gustavo C. Branco +3
We study Two-Higgs-Doublet Models (2HDM) where Abelian symmetries have been introduced, leading to a drastic reduction in the number of free parameters in the 2HDM. Our analysis is…