| Title: |
Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA |
| Authors: |
Gorham, PW; Rotter, B; 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; Hast, C; Hill, B; Hughes, K; Huang, JJ; Hupe, R; Israel, MH; Javaid, A; Lam, J; Liewer, KM; Lin, SY; Liu, TC; Ludwig, A; Macchiarulo, L; Matsuno, S; Miki, C; Mulrey, K; Nam, J; Naudet, CJ; Nichol, RJ; Novikov, A; Oberla, E; Olmedo, M; Prechelt, R; Prohira, S; Rauch, BF; Roberts, JM; Romero-Wolf, A; Russell, JW; Saltzberg, D; Seckel, D; Schoorlemmer, H; Shiao, J; Stafford, S; Stockham, J; Stockham, M; Strutt, B; Varner, GS; Vieregg, AG; Wang, SH; Wissel, SA |
| Source: |
Physical Review Letters , 121 (16) , Article 161102. (2018) |
| Publisher Information: |
AMER PHYSICAL SOC |
| Publication Year: |
2018 |
| Collection: |
University College London: UCL Discovery |
| Description: |
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 |
| Document Type: |
article in journal/newspaper |
| File Description: |
text |
| Language: |
English |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/10061093/1/PhysRevLett.121.161102.pdf; https://discovery.ucl.ac.uk/id/eprint/10061093/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/10061093/1/PhysRevLett.121.161102.pdf; https://discovery.ucl.ac.uk/id/eprint/10061093/ |
| Rights: |
open |
| Accession Number: |
edsbas.21EACF9D |
| Database: |
BASE |