14 citations · 38 across the 10 of their papers we have counts for
10 papers
Gravitational Waves from Dark Gauge Sectors
Alexander Belyaev, Mårten Bertenstam, João Gonçalves +3
We explore gravitational-wave (GW) signatures from a strong first-order phase transition in a non-Abelian dark sector, which naturally gives rise to vector dark matter (DM). We con…
Primordial black holes and magnetic fields in conformal neutrino mass models
Shyam Balaji, João Gonçalves, Danny Marfatia +2
Sufficiently strong and long-lasting first-order phase transitions can produce primordial black holes (PBHs) that contribute substantially to the dark matter abundance of the Unive…
Supercooled phase transitions in conformal dark sectors explain NANOGrav data
João Gonçalves, Danny Marfatia, António P. Morais +1
According to recent lore, it is difficult to explain the evidence for a stochastic gravitational wave background obtained by pulsar timing arrays with supercooled first-order phase…
Gravitational waves from supercooled phase transitions in conformal Majoron models of neutrino mass
João Gonçalves, Danny Marfatia, António P. Morais +1
We study supercooled first-order phase transitions above the QCD scale in a wide class of conformal Majoron-like U(1)' models that explain the totality of active neutrino oscillati…
Tridiagonal scalar mass matrix in the CP4 3HDM and its implications
Bei Liu, Igor P. Ivanov, João Gonçalves
When parametrizing multi-Higgs potentials, it is desirable to express its coefficients via observables. This is routinely done for the 2HDM, but this approach often fails in more e…
Exploring mixed lepton-quark interactions in non-resonant leptoquark production at the LHC
João Gonçalves, António P. Morais, António Onofre +1
Searches for new physics (NP) at particle colliders typically involve multivariate analysis of kinematic distributions of final state particles produced in a decay of a hypothetica…
Gravitational waves from a scotogenic two-loop neutrino mass model
Cesar Bonilla, A. E. Cárcamo Hernández, João Gonçalves +3
We propose a framework to account for neutrino masses at the two-loop level. This mechanism introduces new scalars and Majorana fermions to the Standard Model. It is assumed the ex…
Phenomenology at the Large Hadron Collider with Deep Learning: the case of vector-like quarks decaying to light jets
Felipe F. Freitas, João Gonçalves, António P. Morais +1
In this work, we continue our exploration of TeV-scale vector-like fermion signatures inspired by a Grand Unification scenario based on the trinification gauge group. A particular…
Deep Learning Searches for Vector-Like Leptons at the LHC and Electron/Muon Colliders
António P. Morais, António Onofre, Felipe F. Freitas +3
The discovery potential of both singlet and doublet vector-like leptons (VLLs) at the Large Hadron Collider (LHC) as well as at the not-so-far future muon and electron machines is…
Collider signatures of vector-like fermions from a flavor symmetric model
Cesar Bonilla, A. E. Cárcamo Hernández, João Gonçalves +3
We propose a model with two Higgs doublets and several scalar singlets with a global non-Abelian flavor symmetry . This discrete group acc…