Implications of Leptonic Unitarity Violation at Neutrino Telescopes

Abstract

A measurement of the ultrahigh-energy (UHE) cosmic neutrinos at a km^3-size neutrino telescope will open a new window to constrain the 3 x 3 neutrino mixing matrix V and probe possible new physics. We point out that it is in principle possible to examine the non-unitarity of V, which is naturally expected in a class of seesaw models with one or more TeV-scale Majorana neutrinos, by using neutrino telescopes. Considering the UHE neutrinos produced from the decays of charged pions arising from proton-proton and (or) proton-gamma collisions at a distant astrophysical source, we show that their flavor ratios at a terrestrial neutrino telescope may deviate from the democratic flavor distribution ϕ^T_e : ϕ^T_μ: ϕ^T_τ= 1 : 1 : 1 due to the seesaw-induced unitarity violation of V. Its effect can be as large as several percent and can serve for an illustration of how sensitive a neutrino telescope should be to this kind of new physics.

arXiv comment12 pages, 2 PS figures, accepted for publication in Phys. Lett. B

References in corpus (62)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Tri-Bimaximal Mixing and the Neutrino Oscillation Data
• Indications of Neutrino Oscillation in a 250 km Long-baseline Experiment
• Symmetries and Generalisations of Tri-Bimaximal Neutrino Mixing
• Nearly Tri-Bimaximal Neutrino Mixing and CP Violation
• Detecting Tau Neutrino Oscillations at PeV Energies
• Detecting Nutau Oscillations as PeV Energies
• Unitarity of the Leptonic Mixing Matrix
• Some Simple Mixing and Mass Matrices for Neutrinos
• Measuring Flavor Ratios of High-Energy Astrophysical Neutrinos
• Decay of High-Energy Astrophysical Neutrinos
• Flavor Composition and Energy Spectrum of Astrophysical Neutrinos
• CP-violation from non-unitary leptonic mixing
• Effects of neutrino mixing on high-energy cosmic neutrino flux
• Flavor Mixing and CP Violation of Massive Neutrinos
• Nearly Tri-bimaximal Neutrino Mixing and CP Violation from mu-tau Symmetry Breaking
• Correlation between the Charged Current Interactions of Light and Heavy Majorana Neutrinos
• Leptonic Unitarity Triangle and CP-violation
• Neutrino Observatories Can Characterize Cosmic Sources and Neutrino Properties
• Sensitivity to ${\theta }_{13}$ and $\delta$ in the Decaying Astrophysical Neutrino Scenario
• Flavor Ratios of Astrophysical Neutrinos: Implications for Precision Measurements
• Testing non-unitarity of neutrino mixing matrices at neutrino factories
• Measuring the 13-mixing angle and the CP phase with neutrino telescopes
• Testing neutrino flavor mixing plus decay with neutrino telescopes
• Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux
• How to Describe Neutrino Mixing and CP Violation
• How astrophysical neutrino sources could be used for early measurements of neutrino mass hierarchy and leptonic CP phase
• Results from the Antarctic Muon and Neutrino Detector Array (AMANDA)
• A Minimal Type II Seesaw Model
• Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics
• Probing the 2-3 leptonic mixing at high-energy neutrino telescopes
• Correlative signatures of heavy Majorana neutrinos and doubly-charged Higgs bosons at the Large Hadron Collider
• Neutrino flux ratios at neutrino telescopes: The role of uncertainties of neutrino mixing parameters and applications to neutrino decay
• Towards Determination of the Initial Flavor Composition of Ultrahigh-energy Neutrino Fluxes with Neutrino Telescopes
• Neutrino Telescopes as a Probe of Broken $\mu$-$\tau$ Symmetry
• The intrinsic and oscillated astrophysical neutrino flavor ratios
• Neutrino Mixing and Neutrino Telescopes
• Matter effects and CP violating neutrino oscillations with non-decoupling heavy neutrinos
• Neutrino Flavor Goniometry by High Energy Astrophysical Beams
• Deviations from Tri-bimaximal Neutrino Mixing in Type-II Seesaw and Leptogenesis
• Neutrino mixing scenarios and AGN
• Constraints on Unparticle Interactions from Invisible Decays of Z, Quarkonia and Neutrinos
• A Compromise between Neutrino Masses and Collider Signatures in the Type-II Seesaw Model
• Tetra-maximal Neutrino Mixing and Its Implications on Neutrino Oscillations and Collider Signatures
• Non-unitary deviation from the tri-bimaximal lepton mixing and its implications on neutrino oscillations
• Probing deviations from tri-bimaximal mixing through ultra high energy neutrino signals
• Neutrino decay as a possible interpretation to the MiniBooNE observation with unparticle scenario
• Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes
• On Probing theta_{23} in Neutrino Telescopes
• Probing CP violation in neutrino oscillations with neutrino telescopes
• Conflict between the identification of cosmic neutrino source and the sensitivity to mixing angles in neutrino telescope
• Interference bands in decays of doubly-charged Higgs bosons to dileptons in the minimal type-II seesaw model at the TeV scale
• Nonunitary neutrino mixing matrix and CP violating neutrino oscillations
• Leptonic CP Violation Induced by Approximately mu-tau Symmetric Seesaw Mechanism
• Unparticle decay of neutrinos and it's effect on ultra high energy neutrinos
• Searching for New Physics in Future Neutrino Factory Experiments
• The Muon Magnetic Moment in the TeV Scale Seesaw Models
• Neutrino telescopes as a probe of active and sterile neutrino mixings
• Non-unitary leptonic mixing and CP-violation

Cited by in corpus (51)

• Status of non-standard neutrino interactions
• Flavor structures of charged fermions and massive neutrinos
• A review of mu-tau flavor symmetry in neutrino physics
• Radiative Inverse Seesaw: Verifiable New Mechanism of Neutrino Mass
• The Future of High-Energy Astrophysical Neutrino Flavor Measurements
• Searching for MeV-Scale Gauge Bosons with IceCube
• An Analysis of Cosmic Neutrinos: Flavor Composition at Source and Neutrino Mixing Parameters
• Non-Standard Interaction Effects at Reactor Neutrino Experiments
• Generalized Inverse Seesaws
• Implications of the Daya Bay observation of θ_{13} on the leptonic flavor mixing structure and CP violation
• Interplay of energy dependent astrophysical neutrino flavor ratios and new physics effects
• Energy-independent new physics in the flavour ratios of high-energy astrophysical neutrinos
• A Generic Diagonalization of the 3X3 Neutrino Mass Matrix and Its Implications on the mu-tau Flavor Symmetry and Maximal CP Violation
• Inverse seesaw and dark matter in models with exotic lepton triplets
• The Glashow resonance as a discriminator of UHE cosmic neutrinos originating from p-gamma and p-p collisions
• Ultra-high neutrino fluxes as a probe for non-standard physics
• A partial $\mu$-$\tau$ symmetry and its prediction for leptonic CP violation
• Tetra-maximal Neutrino Mixing and Its Implications on Neutrino Oscillations and Collider Signatures
• Low-energy limits on heavy Majorana neutrino masses from the neutrinoless double-beta decay and non-unitary neutrino mixing
• Aspects of the Flavor Triangle for Cosmic Neutrino Propagation
• Deciphering the Seesaw Nature of Neutrino Mass from Unitarity Violation
• Theoretical Overview of Neutrino Properties
• Diffuse Ultra-High Energy Neutrino Fluxes and Physics Beyond the Standard Model
• Constraining Astrophysical Neutrino Flavor Composition from Leptonic Unitarity
• Non-standard interaction in neutrino oscillations and recent Daya Bay, T2K experiments
• Non-unitary Leptonic Flavor Mixing and CP Violation in Neutrino-antineutrino Oscillations
• Invisible Neutrino Decays as Origin of TeV Gamma Rays from GRB221009A
• Neutrino mass ordering and μ-τreflection symmetry breaking
• Resolving the octant of theta_{23} via radiative mu-tau symmetry breaking
• Non-Unitary Lepton Mixing Matrix, Leptogenesis and Low Energy CP Violation
• Intrinsic Deviation from the Tri-bimaximal Neutrino Mixing in a Class of A_4 Flavor Models
• A study on a minimally broken residual TBM-Klein symmetry with its implications on flavoured leptogenesis and ultra high energy neutrino flux ratios
• On Non-Unitary Lepton Mixing and Neutrino Mass Observables
• Towards testing the unitarity of the 3X3 lepton flavor mixing matrix in a precision reactor antineutrino oscillation experiment
• Intrinsic flavor violation for massive neutrinos
• A further study of μ-τsymmetry breaking at neutrino telescopes after the Daya Bay and RENO measurements of θ_{13}
• Leptonic CP violation at neutrino telescopes
• Non-unitarity of the leptonic mixing matrix in the TeV-scale type-I seesaw model
• Phenomenological implications of the Friedberg-Lee transformation in a neutrino mass model with $\mu \tau$-flavored CP symmetry
• Theoretical Overview on the Flavor Issues of Massive Neutrinos
• Lectures on neutrino phenomenology
• Probing unitarity violation of lepton flavor mixing matrix with reactor antineutrinos at JUNO and TAO
• CP violation in bipair neutrino mixing
• Theory Review of Neutrino Models and CP Violation
• Connect the Lorentz Violation to the Glashow Resonance Event
• Lepton-number-violating decays of singly-charged Higgs bosons in the minimal type-(I+II) seesaw model at the TeV scale
• Effects Of leptonic non-unitarity on lepton flavor violation, neutrino oscillation, leptogenesis and lightest neutrino mass
• Probing New Physics with Astrophysical Neutrinos
• Cosmic Flavor Hexagon for Ultrahigh-energy Neutrinos and Antineutrinos at Neutrino Telescopes
• Measuring Dirac CP-violating phase with intermediate energy beta beam facility
• Can Non-unitary Effect be Prominent in Neutrino Oscillation Measurements?