On the description of non-unitary neutrino mixing

Abstract

Neutrino oscillations are well established and the relevant parameters determined with good precision, except for the CP phase, in terms of a unitary lepton mixing matrix. Seesaw extensions of the Standard Model predict unitarity deviations due to the admixture of heavy isosinglet neutrinos. We provide a complete description of the unitarity and universality deviations in the light neutrino sector. Neutrino oscillation experiments involving electron or muon neutrinos and anti-neutrinos are fully described in terms of just three new real parameters and a new CP phase, in addition to the ones describing oscillations with unitary mixing. Using this formalism we describe the implications of non-unitarity for neutrino oscillations and summarize the model-independent constraints on heavy neutrino couplings that arise from current experiments.

arXiv comment28 pages, 8 figures, typos corrected, modified bounds on non-unitarity parameters, new figs 3 and 4

References in corpus (52)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• The Reactor Antineutrino Anomaly
• Symmetries and Strings in Field Theory and Gravity
• The $\nu$MSM, Dark Matter and Neutrino Masses
• The Search for Heavy Majorana Neutrinos
• Global status of neutrino oscillation parameters after Neutrino-2012
• Improved Search for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations in the MiniBooNE Experiment
• Neutrino-less Double Beta Decay and Particle Physics
• Neutrinos and Collider Physics
• Novel Supersymmetric SO(10) Seesaw Mechanism
• Unitarity of the Leptonic Mixing Matrix
• Analytic Approximations for Three Neutrino Oscillation Parameters and Probabilities in Matter
• Series expansions for three-flavor neutrino oscillation probabilities in matter
• CP Violation and Neutrino Oscillations
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• Dynamical Left-Right Symmetry Breaking
• Left-Right Symmetry Breaking in NJL Approach
• Neutrinoless Double Beta Decay and Physics Beyond the Standard Model
• Search for nu(mu)-->nu(e) Oscillations in the NOMAD Experiment
• TeV Scale Inverse Seesaw in SO(10) and Leptonic Non-Unitarity Effects
• Neutrinoless Double Beta Decay and Heavy Sterile Neutrinos
• Pragmatic View of Short-Baseline Neutrino Oscillations
• Search for Neutral Heavy Leptons in a High-Energy Neutrino Beam
• Heavy Neutrinos and Lepton Flavour Violation in Left-Right Symmetric Models at the LHC
• Update of Short-Baseline Electron Neutrino and Antineutrino Disappearance
• Search for heavy neutrinos mixing with tau neutrinos
• Natural TeV-Scale Left-Right Seesaw for Neutrinos and Experimental Tests
• Limits on Neutrino Mixing with new Heavy Particles
• Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• The low-scale approach to neutrino masses
• Search for heavy neutrinos at Belle
• Search for heavy Majorana neutrinos in mu+/- mu+/- + jets events in proton-proton collisions at sqrt(s) = 8 TeV
• Lepton flavor violation and non-unitary lepton mixing in low-scale type-I seesaw
• Correlation between the Charged Current Interactions of Light and Heavy Majorana Neutrinos
• Probing Heavy-Light Neutrino Mixing in Left-Right Seesaw Models at the LHC
• Bounds on heavy sterile neutrinos revisited
• Sterile neutrinos in leptonic and semileptonic decays
• Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays
• Symmetrical Parametrizations of the Lepton Mixing Matrix
• A full parametrization of the 6 X 6 flavor mixing matrix in the presence of three light or heavy sterile neutrinos
• Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
• Search for Heavy Isosinglet Neutrino in e+e- Annihilation at LEP
• Tree-level lepton universality violation in the presence of sterile neutrinos: impact for $R_K$ and $R_{\pi }$
• Phenomenological Consequences of sub-leading Terms in See-Saw Formulas
• Is charged lepton flavour violation a high energy phenomenon?
• Effect of steriles states on lepton magnetic moments and neutrinoless double beta decay
• Flavour in heavy neutrino searches at the LHC
• Few active mechanisms of the neutrinoless double beta-decay and effective mass of Majorana neutrinos
• Minimalistic Neutrino Mass Model
• Non-Unitary Neutrino Propagation From Neutrino Decay
• Phenomenology of neutrinoless double beta decay

Cited by in corpus (89)

• Status of neutrino oscillations 2018: first hint for normal mass ordering and improved CP sensitivity
• Global constraints on heavy neutrino mixing
• Non-Unitarity, sterile neutrinos, and Non-Standard neutrino Interactions
• Global Constraints on a Heavy Neutrino
• Prospects for Beyond the Standard Model Physics Searches at the Deep Underground Neutrino Experiment
• Unitarity and the three flavour neutrino mixing matrix
• Combining Experimental and Cosmological Constraints on Heavy Neutrinos
• Testing the low scale seesaw and leptogenesis
• Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches
• White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)
• Probing Leptogenesis
• A frequentist analysis of three right-handed neutrinos with GAMBIT
• Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study
• Physics with Beam Tau-Neutrino Appearance at DUNE
• New ambiguity in probing CP violation in neutrino oscillations
• Future CEvNS experiments as probes of lepton unitarity and light-sterile neutrinos
• Measuring the Leptonic CP Phase in Neutrino Oscillations with Non-Unitary Mixing
• R-parity as a residual gauge symmetry : probing a theory of cosmological dark matter
• Low-energy probes of sterile neutrino transition magnetic moments
• A framework for testing leptonic unitarity by neutrino oscillation experiments
• Non-unitary neutrino mixing in short and long-baseline experiments
• Neutrino oscillations and the seesaw origin of neutrino mass
• Neutrino Masses from Neutral Top Partners
• Anomalies in ${}^8$Be nuclear transitions and $(g-2{)}_{e,\mu }$: towards a minimal combined explanation
• Non-unitary evolution of neutrinos in matter and the leptonic unitarity test
• The symmetry approach to quark and lepton masses and mixing
• Gravitational footprints of massive neutrinos and lepton number breaking
• Neutrino Oscillation Probabilities in Matter with Direct and Indirect Unitarity Violation in the Lepton Mixing Matrix
• A nonunitary interpretation for a single vector leptoquark combined explanation to the $B$-decay anomalies
• Probing Direct and Indirect Unitarity Violation in Future Accelerator Neutrino Facilities
• Leptonic Unitarity Triangles
• Physics implications of recent Dresden-II reactor data
• Probing CP violation with T2K, NO$\nu$A and DUNE in the presence of non-unitarity
• Quasi-Dirac neutrino oscillations at DUNE and JUNO
• Dark matter as the origin of neutrino mass in the inverse seesaw mechanism
• Exploring the Potential of Short-Baseline Physics at Fermilab
• Model-Independent Constraints on Non-Unitary Neutrino Mixing from High-Precision Long-Baseline Experiments
• Non-unitary Leptonic Flavor Mixing and CP Violation in Neutrino-antineutrino Oscillations
• Indirect unitarity violation entangled with matter effects in reactor antineutrino oscillations
• Effect of Non Unitarity on Neutrino Mass Hierarchy determination at DUNE, NO$\nu$A and T2K
• Neutrino oscillations and Non-Standard Interactions
• Exploring NSI degeneracies in long-baseline experiments
• Standard versus Non-Standard CP Phases in Neutrino Oscillation in Matter with Non-Unitarity
• Can Lorentz Invariance Violation affect the Sensitivity of Deep Underground Neutrino Experiment?
• Perturbing neutrino oscillations around the solar resonance
• A review of the tension between the T2K and NO$\nu$A appearance data and hints to new physics
• Global Bounds on the Type-III Seesaw
• IceCube bounds on sterile neutrinos above 10 eV
• Neutrino counting experiments and non-unitarity from LEP and future experiments
• New limits on neutrino non-standard mixings based on prescribed singular values
• Non-unitary three-neutrino mixing in the early Universe
• On T violation in non-standard neutrino oscillation scenarios
• Octant of ${\theta }_{23}$ at long baseline neutrino experiments in the light of Non Unitary Leptonic mixing
• Model-independent test of T violation in neutrino oscillations
• Neutrino mixing, interval matrices and singular values
• Nonunitarity of the lepton mixing matrix at the European Spallation Source
• Electroweak Breaking and Higgs Boson Profile in the Simplest Linear Seesaw Model
• Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
• Discriminating sterile neutrinos and unitarity violation with CP invariants
• Improved sensitivities of ESS$\nu$SB from a two-detector fit
• The Type-I Seesaw family
• Non-Unitarity at DUNE and T2HK with Charged and Neutral Current Measurements
• Measuring tau neutrino appearance probability via unitarity
• Probing non-unitary neutrino mixing via long-baseline neutrino oscillation experiments based at J-PARC
• Determination of the ${\theta }_{23}$ octant in long baseline neutrino experiments within and beyond the standard model
• Probing unitarity violation of lepton flavor mixing matrix with reactor antineutrinos at JUNO and TAO
• Precision measurements and tau neutrino physics in a future accelerator neutrino experiment
• Leptonic neutral-current probes in a short-distance DUNE-like setup
• Search for Hidden Neutrinos at the European Spallation Source: the SHiNESS experiment
• Undemocratic Dirac seesaw
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Toward diagnosing neutrino non-unitarity through CP phase correlations
• Large lepton number violation at colliders: predictions from the minimal linear seesaw mechanism
• The effects of triplet Higgs bosons in long baseline neutrino experiments
• Constant matter neutrino oscillations in a parametrization-free formulation
• New physics at nuSTORM
• Analytic Neutrino Oscillation Probabilities
• The mass ratios parametrization
• Geometry of the neutrino mixing space
• Neutrino CP Measurement in the Presence of RG Running with Mismatched Momentum Transfers
• Study of neutrinoless double beta decay in the Standard Model extended with sterile neutrinos
• Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
• Probing atmospheric mixing and leptonic CP violation in current and future long baseline oscillation experiments
• New physics from oscillations at the DUNE near detector, and the role of systematic uncertainties
• Matter neutrino oscillations, an approximation in a parametrization-free framework
• Testing lepton non-unitarity with the next generation of Germanium-based CE$\nu$NS reactor experiments
• Impact of unitarity violation on sensitivity of the leptonic CP phase at Hyper-Kamiokande and DUNE
• Seesaw, coherence and neutrino oscillations
• Exact parametrization of a minimal seesaw model