126 citations · 993 across the 32 of their papers we have counts for
32 papers
Observational bounds on a possible electron-to-proton mass ratio variation and constraints in the lepton-specific 2HDM
R. G. Albuquerque, R. F. L. Holanda, I. E. T. R. Mendonça +1
In this work, we test a possible redshift variation of the electron-to-proton mass ratio, , directly from galaxy cluster gas mass fraction measurements and type Ia supe…
Inflation scenario driven by a low energy physics inflaton
J. G. Ferreira, C. A. de S. Pires, J. G. Rodrigues +1
It is a longstanding desire of cosmologists, and particle physicists as well, to connect inflation to low energy physics, culminating, for instance, in what is known as Higgs infla…
On the Higgs-like boson in the Minimal Supersymmetric 3-3-1 Model
J. G. Ferreira, C. A. de S. Pires, P. S. Rodrigues da Silva +1
It is imperative that any proposal of new physics possesses a Higgs-like boson with 125 GeV of mass and couplings with the standard particles that recover the branching ratios and…
Embedding cosmological inflation, axion dark matter and seesaw mechanism in a 3-3-1 gauge model
J. G. Ferreira, C. A de S. Pires, J. G. Rodrigues +1
The Peccei-Quinn symmetry is an automatic symmetry of the 3-3-1 gauge models which, consequently are not plagued with the strong CP problem. Nevertheless, the axion that emerges fr…
Higgs mass and right-handed sneutrino WIMP in a supersymmetric 3-3-1 model
C. A. de S. Pires, P. S. Rodrigues da Silva, A. C. O. Santos +1
This work deals with right handed sneutrino as thermal cold dark matter candidate. This scalar emerges in a supersymmetric version of gauge…
Realizing the supersymmetric inverse seesaw model in the framework of R-parity violation
C. A. de S. Pires, J. G. Rodrigues, P. S. Rodrigues da Silva
If, on one hand, the inverse seesaw is the paradigm of TeV scale seesaw mechanism, on the other it is a challenge to find scenarios capable of realizing it. In this work we propose…
A Brief Review on WIMPs in 331 Electroweak Gauge Models
P. S. Rodrigues da Silva
In this work we review the cold dark matter problem in the context of a class of models which are a simple extension of the electroweak standard model, where the gauge symmetry is…
Inverse type II seesaw mechanism and its signature at the LHC and ILC
F. F. Freitas, C. A. de S. Pires, P. S. Rodrigues da Silva
The advent of the LHC, and the proposal of building future colliders as the ILC, both programmed to explore new physics at the TeV scale, justifies the recent interest in studying…
A compact 341 model at TeV scale
A. G. Dias, P. R. D. Pinheiro, C. A. de S. Pires +1
We build a gauge model based on the SU(3)_c x SU(4)_L x U(1)_X symmetry where the scalar spectrum needed to generate gauge boson and fermion masses has a smaller scalar content tha…
The Higgs sector of the SUSY reduced 3-3-1 model
J. G. Ferreira, C. A. de S. Pires, P. S. Rodrigues da Silva +1
A supersymmetric version of the recently proposed reduced minimal 3-3-1 model is considered and its Higgs sector is investigated. We focus on the mass spectrum of the lightest scal…
A 331 WIMPy Dark Radiation Model
Chris Kelso, C. A. de S. Pires, Stefano Profumo +2
Recent observations suggest that the number of relativistic degrees of freedom in the early universe might exceed what is predicted in the standard cosmological model. If even a sm…
Explaining ATLAS and CMS Results Within the Reduced Minimal 3-3-1 model
W. Caetano, C. A. de S. Pires, P. S. Rodrigues da Silva +2
Recently the ATLAS and CMS collaborations announced the discovery of a higgs particle with a mass of GeV. The results are mildly consistent with the Standard Model Higgs…
Explaining the Higgs Decays at the LHC with an Extended Electroweak Model
Alexandre Alves, A. G. Dias, E. Ramirez Barreto +3
We show that the recent discovery of a new boson at the LHC, which we assume to be a Higgs boson, and the observed enhancement in its diphoton decays compared to the SM prediction,…
On the connection of Gamma-rays, Dark Matter and Higgs searches at LHC
J. D. R. Alvares, C. A. de S. Pires, Farinaldo S. Queiroz +2
Motivated by the upcoming Higgs analyzes we investigate the importance of the complementarity of the Higgs boson chase on the low mass WIMP search in direct detection experiments a…
Combining type I and type II seesaw mechanisms in the minimal 3-3-1 model
W. Caetano, D. Cogollo, C. A. de S. Pires +1
The minimal 3-3-1 model is perturbative until energies around 4-5TeV, posing a challenge to generate neutrino masses at eV scale, mainly if one aims to take advantage of the seesaw…
A Simple Realization of the Inverse Seesaw Mechanism
A. G. Dias, C. A. de S. Pires, P. S. Rodrigues da Silva +1
Differently from the canonical seesaw mechanism, which is grounded in grand unified theories, the inverse seesaw mechanism lacks a special framework that realizes it naturally. In…
Probing 3-3-1 Models in Diphoton Higgs Boson Decay
A. Alves, E. Ramirez Barreto, A. G. Dias +3
We investigate the Higgs boson production through gluon fusion and its decay into two photons at the LHC in the context of the minimal 3-3-1 model and its alternative version with…
The minimal 3-3-1 model with only two Higgs triplets
J. G. Ferreira, P. R. D. Pinheiro, C. A. de S. Pires +1
The simplest non-abelian gauge extension of the electroweak standard model, the , known as 3-3-1 model, has a minimal version which demands th…
How the Inverse See-Saw Mechanism Can Reveal Itself Natural, Canonical and Independent of the Right-Handed Neutrino Mass
A. G. Dias, C. A. de S. Pires, P. S. Rodrigues da Silva
The common lore in the literature of neutrino mass generation is that the canonical see-saw mechanism beautifully offers an explanation for the tiny neutrino mass but at the cost o…
WIMPs in a 3-3-1 model with heavy Sterile neutrinos
J. K. Mizukoshi, C. A. de S. Pires, F. S. Queiroz +1
In this work we show that from the spectrum of particles of a 3-3-1 gauge model with heavy sterile neutrinos we can have up to three Cold Dark Matter candidates as WIMPs. We obtain…
The Left-Right SU(3)(L)xSU(3)(R)xU(1)(X) Model with Light, keV and Heavy Neutrinos
Alex G. Dias, C. A. de S. Pires, P. S. Rodrigues da Silva
We construct a full left-right model for the electroweak interactions based on the gauge symmetry. The fermion content of the model is…
A minimal 3-3-1 model with naturally sub-eV neutrinos
C. A. de S. Pires, F. Queiroz, P. S. Rodrigues da Silva
In the original version of the minimal SU(3)_C x SU(3)_L x U(1)_N model the masses of all quarks are correctly obtained by introducing three scalar triplets into the model, meanwhi…
Sterile neutrino dark matter, CDMS-II and a light Higgs boson
F. S. Queiroz, C. A. de S. Pires, P. S. Rodrigues da Silva
We add a singlet right handed neutrino plus a charged and a neutral singlet scalars to the standard model. This extension includes a discrete symmetry such that we obtain a heavy s…
Discrete symmetries, invisible axion and lepton number symmetry in an economic 3-3-1 model
Alex G. Dias, C. A. de S. Pires, P. S. Rodrigues da Silva
We show that Peccei-Quinn and lepton number symmetries can be a natural outcome in a 3-3-1 model with right-handed neutrinos after imposing a Z_11 x Z_2 symmetry. This symmetry is…