2018/11/30 by A. Romero-Wolf, A. Romero‐Wolf, Stephanie Wissel +83 · 3 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Flux (metallurgy) #Materials science #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics theoretical and experimental studies #Physics #astro-ph.HE
paper · pdf · doi:10.1103/physrevd.99.063011
published as Phys. Rev. D 99, 063011 (2019) · 12 pages, 7 figures
arxiv created 2019/02/05 · openalex publication_date 2019/03/18 · arxiv updated 2019/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recently, the ANITA collaboration reported on two upward-going extensive air shower events consistent with a primary particle that emerges from the surface of the Antarctic ice sheet. These events may be of \ensuremathν_\ensuremathτ origin, in which the neutrino interacts within the Earth to produce a \ensuremathτ lepton that emerges from the Earth, decays in the atmosphere, and initiates an extensive air shower. In this paper we estimate an upper bound on the ANITA acceptance to a diffuse \ensuremathν_\ensuremathτ flux detected via \ensuremathτ-lepton-induced air showers within the bounds of standard model uncertainties. By comparing this estimate with the acceptance of Pierre Auger Observatory and IceCube and assuming standard model interactions, we conclude that a \ensuremathν_\ensuremathτ origin of these events would imply a neutrino flux at least two orders of magnitude above current bounds.