Search results for "Flavor symmetries"

showing 5 items of 5 documents

Neutrino phenomenology and stable dark matter with A4

2011

We present a model based on the A4 non-abelian discrete symmetry leading to a predictive five-parameter neutrino mass matrix and providing a stable dark matter candidate. We found an interesting correlation among the atmospheric and the reactor angles which predicts theta_23 ~ pi/4 for very small reactor angle and deviation from maximal atmospheric mixing for large theta_13. Only normal neutrino mass spectrum is possible and the effective mass entering the neutrinoless double beta decay rate is constrained to be |m_ee| > 4 10^{-4} eV.

Nuclear and High Energy PhysicsParticle physicsLepton mixingDark matterDiscrete symmetriesFOS: Physical sciencesElementary particle01 natural sciences7. Clean energyNuclear physicsEffective mass (solid-state physics)High Energy Physics - Phenomenology (hep-ph)Double beta decay0103 physical sciencesDark matterNeutrinoless double beta decay010306 general physicsNeutrino oscillationPhysics010308 nuclear & particles physicsFlavor symmetriesNeutrino massesMassless particleHigh Energy Physics - PhenomenologyMass spectrumNeutrinoPhysics Letters B
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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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Measurement of matter-antimatter differences in beauty baryon decays

2017

Differences in the behaviour of matter and antimatter have been observed in $K$ and $B$ meson decays, but not yet in any baryon decay. Such differences are associated with the non-invariance of fundamental interactions under the combined charge-conjugation and parity transformations, known as $C\!P$ violation. Using data from the LHCb experiment at the Large Hadron Collider, a search is made for $C\!P$-violating asymmetries in the decay angle distributions of $\Lambda^0_b$ baryons decaying to $p\pi^-\pi^+\pi^-$ and $p\pi^-K^+K^-$ final states. These four-body hadronic decays are a promising place to search for sources of $C\!P$ violation both within and beyond the Standard Model of particle…

Physics beyond the Standard ModelHadrontransformation [parity]General Physics and Astronomy7000 GeV-cms8000 GeV-cmsviolation [CP]decay [meson]01 natural sciencesHigh Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - Experiment (hep-ex)antimatterscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]AntimatèriaDecays of bottom mesons Flavor symmetriesB mesonLHCb - Abteilung HintonPhysicsLarge Hadron Collider02 Physical Sciencesnew physicsCabibbo–Kobayashi–Maskawa matrixPhysicsparity: transformationParticle physicsFlavor symmetriesCharge conjugation parity time reversal and other discrete symmetrieDecays of bottom mesonsasymmetry: CPCERN LHC CollCP-VIOLATION; LAMBDA(B)meson: decayangular distribution [decay]AntimatterPhysical SciencesCP violationLHCcolliding beams [p p]Lambda/b0: hadronic decayParticle Physics - Experimentp p: scatteringParticle physicsAntimatterFluids & PlasmasPhysics MultidisciplinaryLambda/b0 --> p pi- K+ K-FOS: Physical scienceshadronic decay [Lambda/b0]Lambda/b0 --> p pi+ 2pi-CP [asymmetry]530Lambda/b0 --> p pi+ 2pi-Determination of Cabibbo-Kobayashi & Maskawa (CKM) matrix elementNONuclear physicsPhysics and Astronomy (all)LAMBDA(B)TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY0103 physical sciencesCP: violationdecay: angular distributionddc:530010306 general physicsLarge Hadron Collider (France and Switzerland)01 Mathematical SciencesScience & Technologycharge conjugation010308 nuclear & particles physicshep-exLambda/b0 --> p pi- K+ K-High Energy Physics::PhenomenologyGran Col·lisionador d'HadronsLHC-BHEPBaryonLHCbCP-VIOLATIONCKM matrixHadronic decays of baryonBottom baryons (|B|>0)High Energy Physics::ExperimentFísica de partículesExperimentsp p: colliding beamsstatisticalexperimental results
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Sensitivity to the Higgs sector of SUSY-seesaw models via LFV tau decays

2009

4 páginas, 3 figuras.-- PACS: 11.30.Hv, 12.60.Jv, 14.60.St.-- El PDF es la versión pre-print (arXiv:0909.0724v1).-- Trabajo presentado en la 7th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY09).

PhysicsParticle physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFOS: Physical sciencesFlavor symmetriesSupersymmetry01 natural sciencesHiggs sectorHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)SUSY modelsSeesaw molecular geometry0103 physical sciencesHiggs bosonHigh Energy Physics::ExperimentSensitivity (control systems)010306 general physicsRight-handed neutrinosParticle Physics - Phenomenology
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Model discriminating power ofμ→econversion in nuclei

2009

13 pages, 12 figures, 1 table.-- PACS nrs.: 13.35.Bv; 11.30.Hv.-- ArXiv pre-print available at: http://arxiv.org/abs/0904.0957

Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsParticle physicsMuon[PACS] Flavor symmetries in particles and fields[PACS] Decays of muonsHigh Energy Physics::PhenomenologyHadronLattice field theoryScalar (mathematics)SupersymmetryLattice QCDNuclear physicsLeptonPhysical Review D
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