Gorham, PW;
Rotter, B;
Allison, P;
Banerjee, O;
Batten, L;
Beatty, JJ;
Bechtol, K;
... Wissel, SA; + view all
(2018)
Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA.
Physical Review Letters
, 121
(16)
, Article 161102. 10.1103/PhysRevLett.121.161102.
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Abstract
We report on an upward traveling, radio-detected cosmic-ray-like impulsive event with characteristics closely matching an extensive air shower. This event, observed in the third flight of the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload, is consistent with a similar event reported in a previous flight. These events could be produced by the atmospheric decay of an upward-propagating τ lepton produced by a ν τ interaction, although their relatively steep arrival angles create tension with the standard model neutrino cross section. Each of the two events have a posteriori background estimates of ≲ 10 − 2 events. If these are generated by τ -lepton decay, then either the charged-current ν τ cross section is suppressed at EeV energies, or the events arise at moments when the peak flux of a transient neutrino source was much larger than the typical expected cosmogenic background neutrinos
| Type: | Article |
|---|---|
| Title: | Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.121.161102 |
| Publisher version: | http://doi.org/10.1103/PhysRevLett.121.161102 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10061093 |
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