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arXiv · 1902.11287

Cosmic tau neutrino detection via Cherenkov signals from air showers from Earth-emerging taus

Mary Hall Reno·John F. Krizmanic·Tonia M. Venters
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Abstract

We perform a new, detailed calculation of the flux and energy spectrum of Earth-emerging $τ$-leptons generated from the interactions of tau neutrinos and antineutrinos in the Earth. A layered model of the Earth is used to describe the variable density profile of the Earth. Different assumptions regarding the neutrino charged- and neutral-current cross sections as well as the $τ$-lepton energy loss models are used to quantify the systematic uncertainty from these on the results. A baseline simulation is then used to generate the optical Cherenkov signal from upward-moving extensive air showers generated by the $τ$-lepton decay in the atmosphere, applicable to a range of space-based instruments. We use this simulation to determine the neutrino sensitivity for $E_ν>$ 10 PeV for a space-based experiment with performance similar to that for the Probe of Extreme MultiMessenger Astrophysics (POEMMA) mission currently under study.

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Mary Hall Reno, John F. Krizmanic, Tonia M. Venters. 2019-10-11. Cosmic tau neutrino detection via Cherenkov signals from air showers from Earth-emerging taus. https://doi.org/10.1103/physrevd.100.063010

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