Comprehensive analysis of anomalous ANITA events disfavors a diffuse tau-neutrino flux origin

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 ν τ origin, in which the neutrino interacts within the Earth to produce a τ lepton that emerg...

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Bibliographic Details
Main Authors: Romero-Wolf, A, Wissel, SA, Schoorlemmer, H, Carvalho Jr, WR, Alvarez-Muniz, J, Zas, E, Allison, P, Banerjee, O, Batten, L, Beatty, JJ, Bechtol, K, Belov, K, Besson, DZ, Binns, WR, Bugaev, V, Cao, P, Chen, CC, Chen, CH, Chen, P, Clem, JM, Connolly, A, Cremonesi, L, Dailey, B, Deaconu, C, Dowkontt, PF, Fox, BD, Gordon, JWH, Gorham, PW, Hast, C, Hill, B, Hsu, SY, Huang, JJ, Hughes, K, Hupe, R, Israel, MH, Liewer, KM, Liu, TC, Ludwig, AB, Macchiarulo, L, Matsuno, S, Miki, C, Mulrey, K, Nam, J, Naudet, CC, Nichol, RJ, Novikov, A, Oberla, E, Prohira, S, Rauch, BF, Roberts, JM, Rotter, B, Russell, JW, Saltzberg, D, Seckel, D, Shiao, J, Stafford, S, Stockham, J, Stockham, M, Strutt, B, Sutherland, MS, Varner, GS, Vieregg, AG, Wang, SH
Format: Article in Journal/Newspaper
Language:English
Published: AMER PHYSICAL SOC 2019
Subjects:
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics
Particles & Fields
ATMOSPHERIC SHOWERS
RADIO PULSES
ENERGY
SIMULATIONS
Antarctic
The Antarctic
Antarc*
Ice Sheet
Online Access:https://discovery.ucl.ac.uk/id/eprint/10072337/1/PhysRevD.99.063011.pdf
https://discovery.ucl.ac.uk/id/eprint/10072337/
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Summary: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 ν τ origin, in which the neutrino interacts within the Earth to produce a τ 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 ν τ flux detected via τ -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 ν τ origin of these events would imply a neutrino flux at least two orders of magnitude above current bounds.

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