245 citations · 1.2k across the 27 of their papers we have counts for
28 papers
Fermion mass relations in one-parameter modular models
Salvador Centelles Chuliá, Xueqi Li, Xiang-Gan Liu +2
Modular flavour symmetries provide a possible organizing principle for the Standard Model Yukawa sector, by replacing generic couplings with a potentially small number of modular f…
Quark hierarchies and CP violation from the Siegel modular group
M. Carducci, D. Meloni, M. Parriciatu +1
We investigate theories of flavour based on genus modular invariance and analyze how fermion mass hierarchies can be generated in this context, in the vicinity of invariant p…
The meV frontier of neutrinoless double beta decay in the JUNO era
J. T. Penedo, S. T. Petcov
Observing neutrinoless double beta decay would establish lepton number violation and the Majorana nature of neutrinos. Within the standard 3-flavour paradigm, the rate of this proc…
Supernova flavour conversions in DUNE: the slow, the fast and the standard
A. Giarnetti, J. T. Penedo
The flavour composition of a future supernova neutrino signal is expected to carry measurable imprints of flavour conversion processes in the dense stellar medium. In this work, we…
Modular-symmetry-protected seesaw
A. Granelli, D. Meloni, M. Parriciatu +2
In the presence of a finite modular flavour symmetry, fermion mass hierarchies may be generated by a slight deviation of the modulus from a symmetric point. We point out that this…
Vector-like quark doublets, weak-basis invariants and CP violation
F. Albergaria, J. F. Bastos, B. Belfatto +4
We study Standard Model extensions with isodoublet vector-like quarks with standard charges. Their presence induces right-handed charged and neutral currents. We identify minimal s…
Finite modular symmetries and the strong CP problem
J. T. Penedo, S. T. Petcov
Recently, it was shown that modular symmetry may solve the strong CP problem without axions, by producing a vanishing QCD angle while generating a large quark CP violation phase. W…
Quarks at the modular cusp
I. de Medeiros Varzielas, M. Levy, J. T. Penedo +1
We analyse the possibility of describing quark masses, mixing and CP violation in modular flavour models without flavons. We focus on the case where the closeness of the mod…
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…
Sterile neutrinos along the DUNE decay pipe
João Penedo, João Pulido
We analyse the sensitivity of the Deep Underground Neutrino Experiment (DUNE) to a sterile neutrino, combining information from both the Near Detector (ND) and the Far Detector (FD…
Axionic Dirac seesaw and electroweak vacuum stability
J. T. Penedo, Yakefu Reyimuaji, Xinyi Zhang
We explore the connection between tree-level Dirac neutrino masses and axion physics in a scenario where the PQ symmetry enforces lepton number conservation perturbatively. Requiri…
Baseline and other effects for a sterile neutrino at DUNE
J. T. Penedo, João Pulido
We analyze the sensitivity of the Deep Underground Neutrino Experiment (DUNE) to a sterile neutrino, combining information from both near and far detectors. We quantify often-negle…
Modular Flavour Symmetries and Modulus Stabilisation
P. P. Novichkov, J. T. Penedo, S. T. Petcov
We study the problem of modulus stabilisation in the framework of the modular symmetry approach to the flavour problem. By analysing simple UV-motivated CP-invariant potentials for…
Addressing the CKM Unitarity Problem with a Vector-like Up Quark
G. C. Branco, J. T. Penedo, Pedro M. F. Pereira +2
We point out that hints of deviations from unitarity in the first row of the CKM matrix may be explained by the presence of a single vector-like top. We study how the stringent exp…
Fermion Mass Hierarchies, Large Lepton Mixing and Residual Modular Symmetries
P. P. Novichkov, J. T. Penedo, S. T. Petcov
In modular-invariant models of flavour, hierarchical fermion mass matrices may arise solely due to the proximity of the modulus to a point of residual symmetry. This mechanism…
Double Cover of Modular for Flavour Model Building
P. P. Novichkov, J. T. Penedo, S. T. Petcov
We develop the formalism of the finite modular group , a double cover of the modular permutation group , for theories of flavour. The integer weig…
Type-I Seesaw with eV-Scale Neutrinos
G. C. Branco, J. T. Penedo, Pedro M. F. Pereira +2
We consider seesaw type-I models including at least one (mostly-)sterile neutrino with mass at the eV scale. Three distinct situations are found, where the presence of light extra…
Generalised CP Symmetry in Modular-Invariant Models of Flavour
P. P. Novichkov, J. T. Penedo, S. T. Petcov +1
The formalism of combined finite modular and generalised CP (gCP) symmetries for theories of flavour is developed. The corresponding consistency conditions for the two symmetry tra…
Modular Symmetry for Flavour Model Building
P. P. Novichkov, J. T. Penedo, S. T. Petcov +1
In the framework of the modular symmetry approach to lepton flavour, we consider a class of theories where matter superfields transform in representations of the finite modular gro…
Modular Models of Lepton Masses and Mixing
P. P. Novichkov, J. T. Penedo, S. T. Petcov +1
We investigate models of charged lepton and neutrino masses and lepton mixing based on broken modular symmetry. The matter fields in these models are assumed to transform in irredu…
Lepton Masses and Mixing from Modular Symmetry
J. T. Penedo, S. T. Petcov
We study models of lepton masses and mixing based on broken modular invariance. We consider invariance under the finite modular group and focus on the minimal scen…
The eV Frontier in Neutrinoless Double Beta Decay
J. T. Penedo, S. T. Petcov
The observation of neutrinoless double beta decay would allow to establish lepton number violation and the Majorana nature of neutrinos. The rate of this process in the case of 3-n…
Neutrino Mixing and Leptonic CP Violation from and Generalised CP Symmetries
J. T. Penedo, S. T. Petcov, A. V. Titov
We consider a class of models of neutrino mixing with flavour symmetry and generalised CP symmetry, broken to and residual symmetries in the charg…
Low-Scale Seesaw and the CP Violation in Neutrino Oscillations
J. T. Penedo, S. T. Petcov, Tsutomu T. Yanagida
We consider a version of the low-scale type I seesaw mechanism for generating small neutrino masses, as an alternative to the standard seesaw scenario. It involves two right-handed…