Search results for "neutrino masses and mixing"

showing 3 items of 3 documents

Admixture of quasi-Dirac and Majorana neutrinos with tri-bimaximal mixing

2011

7 páginas, 1 tabla.-- El Pdf es la versión pre-print: arXiv:1104.4961v2

Nuclear and High Energy PhysicsParticle physicsNeutrino hierarchyDiscrete symmetriesFOS: Physical sciences01 natural sciencesUpper and lower boundsHigh Energy Physics - Phenomenology (hep-ph)Double beta decay0103 physical sciencesTri-bimaximal mixingNeutrino masses and mixingsNeutrinoless double beta decay010306 general physicsMixing (physics)Majorana equationPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFlavor symmetries3. Good healthMassless particleMAJORANAHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNeutrinoLepton
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Constraining the invisible neutrino decay with KM3NeT-ORCA

2019

Several theories of particle physics beyond the Standard Model consider that neutrinos can decay. In this work we assume that the standard mechanism of neutrino oscillations is altered by the decay of the heaviest neutrino mass state into a sterile neutrino and, depending on the model, a scalar or a Majoron. We study the sensitivity of the forthcoming KM3NeT-ORCA experiment to this scenario and find that it could improve the current bounds coming from oscillation experiments, where three-neutrino oscillations have been considered, by roughly two orders of magnitude. We also study how the presence of this neutrino decay can affect the determination of the atmospheric oscillation parameters $…

Nuclear and High Energy PhysicsParticle physicsSterile neutrinoPhysics::Instrumentation and DetectorsPhysics beyond the Standard ModelAstrophysics::High Energy Astrophysical PhenomenaNeutrino masses and mixingScalar (mathematics)FOS: Physical sciences01 natural sciencesPartícules (Física nuclear)High Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsNeutrino oscillationNeutrino decayMajoronPhysics010308 nuclear & particles physicsOscillationNeutrino oscillationsHigh Energy Physics::Phenomenologylcsh:QC1-999High Energy Physics - PhenomenologyKM3NeTHigh Energy Physics::ExperimentNeutrinoNeutrino telescopeslcsh:PhysicsPhysics Letters
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Accidental stability of dark matter

2013

We propose that dark matter is stable as a consequence of an accidental Z(2) that results from a flavour symmetry group which is the double-cover group of the symmetry group of one of the regular geometric solids. Although model-dependent, the phenomenology resembles that of a generic >inert Higgs> dark matter scheme.

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsDark matterHigh Energy Physics::Phenomenologyneutrino masses and mixingFOS: Physical sciencesFísicaSymmetry group01 natural sciencesdark matterHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Accidental0103 physical sciencesHiggs boson010306 general physicsPhenomenology (particle physics)flavour symmetry
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