High-energy astrophysical neutrinos can constrain the running of neutrino mixing parameters with energy, with future multi-detector setups forecast to set strong bounds despite astrophysical uncertainties.
Flavor composition of ultrahigh- energy cosmic neutrinos: Measurement forecasts for in-ice radio-based EeV neutrino telescopes
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Mu-tau interchange symmetry in the lepton mixing matrix leads to a potential divergence when tracing individual muon and tau neutrino fractions from astrophysical sources, so that only their sum plus the electron fraction can be extracted in the exact symmetry limit.
With 2013-2023 exposure, the as-built ARA achieves world-leading UHE neutrino sensitivity above ~10^19 eV and predicts up to 13 trigger-level events under optimistic flux models, with secondaries contributing up to 30% of acceptance.
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Astrophysical bounds on the high-energy evolution of neutrino mixing
High-energy astrophysical neutrinos can constrain the running of neutrino mixing parameters with energy, with future multi-detector setups forecast to set strong bounds despite astrophysical uncertainties.
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Potential divergence in tracing $\mu$ and $\tau$ flavors of astrophysical neutrinos
Mu-tau interchange symmetry in the lepton mixing matrix leads to a potential divergence when tracing individual muon and tau neutrino fractions from astrophysical sources, so that only their sum plus the electron fraction can be extracted in the exact symmetry limit.
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Sensitivity of the As-Built Askaryan Radio Array to Ultra-High Energy Neutrinos
With 2013-2023 exposure, the as-built ARA achieves world-leading UHE neutrino sensitivity above ~10^19 eV and predicts up to 13 trigger-level events under optimistic flux models, with secondaries contributing up to 30% of acceptance.