Non-unitary neutrino mixing in short and long-baseline experiments

Abstract

Non-unitary neutrino mixing in the light neutrino sector is a direct consequence of type-I seesaw neutrino mass models. In these models, light neutrino mixing is described by a sub-matrix of the full lepton mixing matrix and, then, it is not unitary in general. In consequence, neutrino oscillations are characterized by additional parameters, including new sources of CP violation. Here we perform a combined analysis of short and long-baseline neutrino oscillation data in this extended mixing scenario. We did not find a significant deviation from unitary mixing, and the complementary data sets have been used to constrain the non-unitarity parameters. We have also found that the T2K and NOvA tension in the determination of the Dirac CP-phase is not alleviated in the context of non-unitary neutrino mixing.

arXiv comment18 pages

References in corpus (62)

• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• The Reactor Antineutrino Anomaly
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• The Search for Heavy Majorana Neutrinos
• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• 2020 Global reassessment of the neutrino oscillation picture
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment
• Novel Supersymmetric SO(10) Seesaw Mechanism
• Global constraints on absolute neutrino masses and their ordering
• Measurement of the response of a Ga solar neutrino experiment to neutrinos from an 37Ar source
• Global constraints on heavy neutrino mixing
• Dynamical Left-Right Symmetry Breaking
• Left-Right Symmetry Breaking in NJL Approach
• CP-violation from non-unitary leptonic mixing
• Non-Unitarity, sterile neutrinos, and Non-Standard neutrino Interactions
• Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies
• Search for nu(mu)-->nu(e) Oscillations in the NOMAD Experiment
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Search for sterile neutrinos in MINOS and MINOS+ using a two-detector fit
• New constraints on oscillation parameters from ${\nu }_e$ appearance and ${\nu }_{\mu }$ disappearance in the NOvA experiment
• Status of Light Sterile Neutrino Searches
• Neutrino Flux Predictions for the NuMI Beam
• eV-scale Sterile Neutrinos
• Global Constraints on a Heavy Neutrino
• On the description of non-unitary neutrino mixing
• Final NOMAD results on nu_mu->nu_tau and nu_e->nu_tau oscillations including a new search for nu_tau appearance using hadronic tau decays
• Where Are We With Light Sterile Neutrinos?
• Unitarity and the three flavour neutrino mixing matrix
• Global Fit to Modified Neutrino Couplings and the Cabibbo-Angle Anomaly
• Improved constraints on neutrino mixing from the T2K experiment with $3.13\times 10^{21}$ protons on target
• Lepton flavor violation and non-unitary lepton mixing in low-scale type-I seesaw
• Non-unitary neutrino mixing and CP violation in the minimal inverse seesaw model
• Short-Baseline Active-Sterile Neutrino Oscillations?
• Combining Experimental and Cosmological Constraints on Heavy Neutrinos
• Addendum to: Global constraints on absolute neutrino masses and their ordering
• A full parametrization of the 6 X 6 flavor mixing matrix in the presence of three light or heavy sterile neutrinos
• CP-Violating Neutrino Non-Standard Interactions in Long-Baseline-Accelerator Data
• Testing non-unitarity of neutrino mixing matrices at neutrino factories
• Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study
• Non-standard neutrino interactions as a solution to the NO$\nu$A and T2K discrepancy
• Non-unitarity effects in a realistic low-scale seesaw model
• New ambiguity in probing CP violation in neutrino oscillations
• Future CEvNS experiments as probes of lepton unitarity and light-sterile neutrinos
• Back to (Mass-)Square(d) One: The Neutrino Mass Ordering in Light of Recent Data
• Final results on nu_mu to nu_tau oscillation from the CHORUS experiment
• Measuring the Leptonic CP Phase in Neutrino Oscillations with Non-Unitary Mixing
• Current and Future Neutrino Oscillation Constraints on Leptonic Unitarity
• Non-standard interactions versus non-unitary lepton flavor mixing at a neutrino factory
• A Search for Muon-neutrino to Electron-neutrino and Muon-antineutrino to Electron-antineutrino Oscillations at NuTeV
• Neutrino-4 anomaly: oscillations or fluctuations?
• Global oscillation data analysis on the $3\nu$ mixing without unitarity
• Exploring the Potential of Short-Baseline Physics at Fermilab
• 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
• Standard versus Non-Standard CP Phases in Neutrino Oscillation in Matter with Non-Unitarity
• Type-I Seesaw with eV-Scale Neutrinos
• Neutrino counting experiments and non-unitarity from LEP and future experiments
• Discriminating sterile neutrinos and unitarity violation with CP invariants
• CPT and CP, an entangled couple
• Non-unitarity of the leptonic mixing matrix in the TeV-scale type-I seesaw model
• New physics at nuSTORM

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• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Low-energy probes of sterile neutrino transition magnetic moments
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• Dark matter as the origin of neutrino mass in the inverse seesaw mechanism
• New oscillation and scattering constraints on the tau row matrix elements without assuming unitarity
• 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
• Very Light Sterile Neutrinos at NOvA and T2K
• Non-unitary three-neutrino mixing in the early Universe
• Nonunitarity of the lepton mixing matrix at the European Spallation Source
• New Physics searches in a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors
• Probing non-unitary neutrino mixing via long-baseline neutrino oscillation experiments based at J-PARC
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• Improving CP Measurement with THEIA and Muon Decay at Rest
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