Upward-Pointing Cosmic-Ray-like Events Observed with ANITA

2018/09/30 by A. Romero‐Wolf, Romero-Wolf, Andres, P. W. Gorham +149
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Neutrino Physics Research

paper · pdf · doi:10.48550/arxiv.1810.00439

openalex publication_date 2018/09/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

These proceedings address a recent publication by the ANITA collaboration of four upward- pointing cosmic-ray-like events observed in the first flight of ANITA. Three of these events were consistent with stratospheric cosmic-ray air showers where the axis of propagation does not inter- sect the surface of the Earth. The fourth event was consistent with a primary particle that emerges from the surface of the ice suggesting a possible τ-lepton decay as the origin of this event. These proceedings follow-up on the modeling and testing of the hypothesis that this event was of τ neutrino origin.

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