The signatures of secondary leptons in radio-neutrino detectors in ice

Abstract

The detection of the radio emission following a neutrino interaction in ice is a promising technique to obtain significant sensitivities to neutrinos with energies above PeV. The detectable radio emission stems from particle showers in the ice. So far, detector simulations have considered only the radio emission from the primary interaction of the neutrino. For this study, existing simulation tools have been extended to cover secondary interactions from muons and taus. We find that secondary interactions of both leptons add up to 25\% to the effective volume of neutrino detectors. Also, muon and tau neutrinos can create several detectable showers, with the result that double signatures do not constitute an exclusive signature for tau neutrinos. We also find that the background of atmospheric muons from cosmic rays is non-negligible for in-ice arrays and that an air shower veto should be considered helpful for radio detectors.

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• The ultra-high-energy neutrino-nucleon cross section: measurement forecasts for an era of cosmic EeV-neutrino discovery
• Reconstructing the neutrino energy for in-ice radio detectors
• Reconstructing the arrival direction of neutrinos in deep in-ice radio detectors
• Deep-learning-based reconstruction of the neutrino direction and energy for in-ice radio detectors
• Radio Detection of High Energy Neutrinos in Ice
• Near-future discovery of point sources of ultra-high-energy neutrinos
• An improved trigger for Askaryan radio detectors
• The flavor composition of ultra-high-energy cosmic neutrinos: measurement forecasts for in-ice radio-based EeV neutrino telescopes
• Atmospheric muons at PeV energies in radio neutrino detectors
• In-ice Askaryan Emission from Air Showers: Implications for Radio Neutrino Detectors
• toise: a framework to describe the performance of high-energy neutrino detectors