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.

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

References in corpus (33)

• Unitarity of the Leptonic Mixing Matrix
• Flavor Composition and Energy Spectrum of Astrophysical Neutrinos
• CP-violation from non-unitary leptonic mixing
• Correlation between the Charged Current Interactions of Light and Heavy Majorana Neutrinos
• Flavor Ratios of Astrophysical Neutrinos: Implications for Precision Measurements
• Testing non-unitarity of neutrino mixing matrices at neutrino factories
• Testing neutrino flavor mixing plus decay with neutrino telescopes
• How astrophysical neutrino sources could be used for early measurements of neutrino mass hierarchy and leptonic CP phase
• A Minimal Type II Seesaw Model
• Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics
• 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
• Deviations from Tri-bimaximal Neutrino Mixing in Type-II Seesaw and Leptogenesis
• Neutrino Flavor Goniometry by High Energy Astrophysical Beams
• 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
• Non-unitary deviation from the tri-bimaximal lepton mixing and its implications on neutrino oscillations
• Tetra-maximal Neutrino Mixing and Its Implications on Neutrino Oscillations and Collider Signatures
• 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
• Unparticle decay of neutrinos and it's effect on ultra high energy neutrinos
• Leptonic CP Violation Induced by Approximately mu-tau Symmetric Seesaw Mechanism
• 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

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• A Generic Diagonalization of the 3X3 Neutrino Mass Matrix and Its Implications on the mu-tau Flavor Symmetry and Maximal CP Violation
• 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
• Theoretical Overview of Neutrino Properties
• Constraining Astrophysical Neutrino Flavor Composition from Leptonic Unitarity
• Invisible Neutrino Decays as Origin of TeV Gamma Rays from GRB221009A
• Neutrino mass ordering and μ-τreflection symmetry breaking
• Non-unitary Leptonic Flavor Mixing and CP Violation in Neutrino-antineutrino Oscillations
• Resolving the octant of theta_{23} via radiative mu-tau symmetry breaking
• Intrinsic Deviation from the Tri-bimaximal Neutrino Mixing in a Class of A_4 Flavor Models
• Intrinsic flavor violation for massive neutrinos
• Leptonic CP violation at neutrino telescopes
• Theoretical Overview on the Flavor Issues of Massive Neutrinos
• Probing unitarity violation of lepton flavor mixing matrix with reactor antineutrinos at JUNO and TAO
• Lectures on neutrino phenomenology
• Theory Review of Neutrino Models and CP Violation
• Connect the Lorentz Violation to the Glashow Resonance Event
• Probing New Physics with Astrophysical Neutrinos
• Cosmic Flavor Hexagon for Ultrahigh-energy Neutrinos and Antineutrinos at Neutrino Telescopes