145 citations · 1.1k across the 36 of their papers we have counts for
32 papers · 1 filter
Time-of-Flight Constraints on Neutrino Millicharge from Supernova Neutrinos in Galactic Magnetic Fields
Pedro Dedin Neto, AmirFarzan Esmaeili, Guilherme A. Nogueira +2
A millicharged neutrino propagating through magnetic fields experiences a small Lorentz-force deflection, which induces a geometric time delay. In the ultra-relativistic regime rel…
On the Effects of Quantum Decoherence in a Future Supernova Neutrino Detection
Marcos V. dos Santos, Pedro C. de Holanda, Pedro Dedin Neto +1
Quantum decoherence effects in neutrinos, described by the open quantum systems formalism, serve as a gateway to explore potential new physics, including quantum gravity. Previous…
SN1987A neutrino burst: limits on flavor conversion
Pedro Dedin Neto, Marcos V. dos Santos, Pedro Cunha de Holanda +1
In this paper, we revisit the SN1987A neutrino data to see its constraints on flavor conversion. We are motivated by the fact that most works that analyze this data consider a spec…
Constraints on energy scales from dark matter decay in a gauged model
Guillermo Gambini, Pedro C. de Holanda, Saulo Carneiro
Popular extensions of the standard model of particle physics feature new fields and symmetries which could, for example, dynamically generate neutrino masses from spontaneous…
Updating lifetime from solar antineutrino spectra
R. Picoreti, D. Pramanik, P. C. de Holanda +1
We study the production of antineutrinos from the solar neutrinos due the Majorana neutrino decays of neutrino to antineutrino. Using the antineutrino spectra from KamLAND and Bore…
Understanding and visualizing the statistical analysis of SN1987A neutrino data
Marcos V. dos Santos, Pedro Cunha de Holanda
The SN1987A detection through neutrinos was an event of great importance in neutrino physics, being the first detection of neutrinos created outside our solar system, and then inau…
Quantum Decoherence Effects in Neutrino Oscillations at DUNE
G. Balieiro Gomes, D. V. Forero, M. M. Guzzo +2
In this work we analyze quantum decoherence in neutrino oscillations considering the Open Quantum System framework and oscillations through matter for three neutrino families. Taki…
Parameter Limits for Neutrino Oscillation with Decoherence in KamLAND
G. Balieiro Gomes, M. M. Guzzo, P. C. de Holanda +1
In the framework of quantum open systems we analyze data from KamLAND by using a model that considers neutrino oscillation in a three-family approximation with the inclusion of the…
Cosmological bounds of sterile neutrinos in a model as dark matter candidates
Cesar P. Ferreira, Marcelo M. Guzzo, Pedro C. de Holanda
We study sterile neutrinos in an extension of the standard model, based on the gauge group , and use this model to illustrate h…
Neutrino Decay and Solar Neutrino Seasonal Effect
R. Picoreti, M. M. Guzzo, P. C. de Holanda +1
We consider the possibility of solar neutrino decay as a sub-leading effect on their propagation between production and detection. Using current oscillation data, we set a new lowe…
Quantum Dissipation in a Neutrino System Propagating in Vacuum and in Matter
Roberto L. N. Oliveira, Marcelo M. Guzzo, Pedro C. de Holanda
Considering the neutrino state like an open quantum system, we analyze its propagation in vacuum or in matter. After defining what can be called decoherence and relaxation effects,…
Constraining the Violation of Equivalence Principle with IceCube Atmospheric Neutrino Data
A. Esmaili, D. R. Gratieri, M. M. Guzzo +3
The recent high-statistics high-energy atmospheric neutrino data collected by IceCube open a new window to probe new physics scenarios that are suppressed in lower energy neutrino…
Quantum Dissipation and CP Violation in MINOS
R. L. N. Oliveira, M. M. Guzzo, P. C. de Holanda
We use the open quantum systems framework to analyze the MINOS data and perform this analysis considering two different dissipative models. In the first model, the dissipative para…
Stochastic Neutrino Mixing Mechanism
M. M. Guzzo, P. C. de Holanda, O. L. G. Peres +1
We propose a mechanism which provides an explanation of the Gallium and antineutrino reactor anomalies. Differently from original Pontecorvo's hypothesis, this mechanism is based o…
New limits on neutrino magnetic moment through non-vanishing 13-mixing
Marcelo Moraes Guzzo, Pedro Cunha de Holanda, Orlando Luis Goulart Peres
The relatively large value of neutrino mixing angle θ_{13} set by recent measurements allows us to use solar neutrinos to set a limit on neutrino magnetic moment involving second a…
Non-standard neutrinos interactions in a 331 model with minimum Higgs sector
M. Medina, P. C. de Holanda
We present a detailed analysis of a class of extensions to the SM Gauge chiral symmetry (331 model), where the neutrino electroweak inter…
Solar neutrino spectrum, sterile neutrinos and additional radiation in the Universe
P. C. de Holanda, A. Yu. Smirnov
Recent results from the SNO, Super-Kamiokande and Borexino experiments do not show the expected upturn of the energy spectrum of events (the ratio ) at lo…
Mass Varying Neutrinos in Supernovae
F. Rossi-Torres, M. M. Guzzo, P. C. de Holanda +1
We study the consequences on the neutrino oscillation parameter space, mixing angle () and vacuum mass difference (), when mass varying neutrino (MaVaN) models are…
Possible scenario for MaVaN's as the only neutrino flavor conversion mechanism in the Sun
Pedro Cunha de Holanda
Mass Varying neutrino mechanisms were proposed to link the neutrino mass scale with dark energy, addressing the coincidence problem. In some scenarios this mass can present a depen…
Probing long-range leptonic forces with solar and reactor neutrinos
M C Gonzalez-Garcia, P C~de Holanda, E Masso +1
In this work we study the phenomenological consequences of the existence of long-range forces coupled to lepton flavour numbers in solar neutrino oscillations. We study electronic…
Effects of non-standard neutrino interactions on MSW-LMA solution to the solar neutrino problem
M. M. Guzzo, P. C. de Holanda, O. L. G. Peres
We show that the non-standard neutrino interactions can play a role as sub-leading effect on the solar neutrino oscillations. We observe that very small flavor universality violati…
Solar neutrinos: the SNO salt phase results and physics of conversion
P. C. de Holanda, A. Yu. Smirnov
We have performed analysis of the solar neutrino data including results from the SNO salt phase as well as the combined analysis of the solar and the KamLAND results. The best fit…
Large mixing angle solution to the solar neutrino problem and random matter density perturbations
M. M. Guzzo, P. C. de Holanda, N. Reggiani
There are reasons to believe that mechanisms exist in the solar interior which lead to random density perturbations in the resonant region of the Large Mixing Angle solution to the…
Solar neutrinos: global analysis with day and night spectra from SNO
P. C. de Holanda, A. Yu. Smirnov
We perform global analysis of the solar neutrino data including the day and night spectra of events at SNO. In the context of two active neutrino mixing, the best fit of the data i…