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Title: Anomalous ANITA air shower events and tau decays

Abstract

Two unusual neutrino events in the Antarctic Impulse Transient Antenna (ANITA) appear to have been generated by air showers from a particle emerging from the Earth at angle ~25°–35° above the horizon. We evaluate the effective aperture for ANITA with a simplified detection model to illustrate the features of the angular dependence of expected events for incident standard model tau neutrinos and for sterile neutrinos that mix with tau neutrinos. We apply our sterile neutrino aperture results to a dark matter scenario with long-lived supermassive dark matter that decay to sterile neutrino-like particles. Here, we find that for upgoing air showers from tau decays, from isotropic fluxes of standard model, sterile neutrinos, or other particles that couple to the tau through suppressed weak interaction cross sections cannot be responsible for the unusual events.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [3]
  1. Univ. of Chicago, IL (United States)
  2. Univ. of Iowa, Iowa City, IA (United States)
  3. Univ. of Arizona, Tucson, AZ (United States)
Publication Date:
Research Org.:
Univ. of Iowa, Iowa City, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1595315
Grant/Contract Number:  
SC0010113; FG02-13ER41976; SC0009913; 80NSSC18K0246
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 6; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Particle astrophysics; Neutrinos; Extrasolar neutrino astronomy; Particle & Fields; Gravitation; Cosmology & Astrophysics

Citation Formats

Chipman, Shoshana, Diesing, Rebecca, Reno, Mary Hall, and Sarcevic, Ina. Anomalous ANITA air shower events and tau decays. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.063011.
Chipman, Shoshana, Diesing, Rebecca, Reno, Mary Hall, & Sarcevic, Ina. Anomalous ANITA air shower events and tau decays. United States. doi:10.1103/PhysRevD.100.063011.
Chipman, Shoshana, Diesing, Rebecca, Reno, Mary Hall, and Sarcevic, Ina. Sun . "Anomalous ANITA air shower events and tau decays". United States. doi:10.1103/PhysRevD.100.063011.
@article{osti_1595315,
title = {Anomalous ANITA air shower events and tau decays},
author = {Chipman, Shoshana and Diesing, Rebecca and Reno, Mary Hall and Sarcevic, Ina},
abstractNote = {Two unusual neutrino events in the Antarctic Impulse Transient Antenna (ANITA) appear to have been generated by air showers from a particle emerging from the Earth at angle ~25°–35° above the horizon. We evaluate the effective aperture for ANITA with a simplified detection model to illustrate the features of the angular dependence of expected events for incident standard model tau neutrinos and for sterile neutrinos that mix with tau neutrinos. We apply our sterile neutrino aperture results to a dark matter scenario with long-lived supermassive dark matter that decay to sterile neutrino-like particles. Here, we find that for upgoing air showers from tau decays, from isotropic fluxes of standard model, sterile neutrinos, or other particles that couple to the tau through suppressed weak interaction cross sections cannot be responsible for the unusual events.},
doi = {10.1103/PhysRevD.100.063011},
journal = {Physical Review D},
number = 6,
volume = 100,
place = {United States},
year = {2019},
month = {9}
}

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