Observing EeV neutrinos through the Earth: GZK and the anomalous ANITA events

Abstract

Tau neutrinos are unique cosmic messengers, especially at extreme energies. When they undergo a charged-current interaction, the short lifetime of the produced tau gives rise to secondary tau neutrinos that carry a significant fraction of the primary neutrino energy. This effect, known as tau neutrino regeneration, has not been applied to its full potential in current generation neutrino experiments. In this work, we present an updated calculation of tau neutrino regeneration, and explore its implications for two scenarios: the recent anomalous ANITA events and the cosmogenic neutrino flux. For the former, we investigate the idea of localized emission and find that the maximum secondary neutrino flux allowed by IceCube measurements implies a primary flux that is incompatible with the ANITA observation, regardless of the assumed source energy spectrum. For the latter, we study the prospect of detecting the cosmogenic neutrino flux of regenerated PeV neutrinos with current and next generation neutrino detectors.

22 pages, 10 figures. Find the code related to this work at https://github.com/IceCubeOpenSource/TauRunner

References in corpus (18)

• Observation and Characterization of a Cosmic Muon Neutrino Flux from the Northern Hemisphere using six years of IceCube data
• Calculation of atmospheric neutrino flux using the interaction model calibrated with atmospheric muon data
• First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section
• Prompt neutrino fluxes from atmospheric charm
• Measurement of the proton-air cross-section at $\sqrt{s}=57$ TeV with the Pierre Auger Observatory
• The Cosmic Ray Energy Spectrum Observed with the Surface Detector of the Telescope Array Experiment
• Cosmogenic Neutrinos: parameter space and detectabilty from PeV to ZeV
• GZK Neutrinos after the Fermi-LAT Diffuse Photon Flux Measurement
• Measurement of the multi-TeV neutrino cross section with IceCube using Earth absorption
• Neutrinos from WIMP Annihilations Obtained Using a Full Three-Flavor Monte Carlo Approach
• Physics Reach of High-Energy and High-Statistics IceCube Atmospheric Neutrino Data
• A Comprehensive Approach to Tau-Lepton Production by High-Energy Tau Neutrinos Propagating Through Earth
• Connection of the virtual ${\gamma }^{\ast }p$ cross section of $ep$ deep inelastic scattering to real $\gamma p$ scattering, and the implications for $\nu N$ and $ep$ total cross sections
• High-energy neutrinos from radio galaxies
• A Dark Matter Interpretation of the ANITA Anomalous Events
• The first search for extremely-high energy cosmogenic neutrinos with the IceCube Neutrino Observatory
• Can the ANITA anomalous events be due to new physics?
• On the transport equations of cosmic neutrinos passing through Earth and secondary nu_mu fluxes