| Literature DB >> 30387639 |
P W Gorham1, B Rotter1, P Allison2, O Banerjee2, L Batten3, J J Beatty2, K Bechtol4, K Belov5, D Z Besson6,7, W R Binns8, V Bugaev8, P Cao9, C C Chen10, C H Chen10, P Chen10, J M Clem9, A Connolly2, L Cremonesi3, B Dailey2, C Deaconu4, P F Dowkontt8, B D Fox1, J W H Gordon2, C Hast11, B Hill1, K Hughes2, J J Huang10, R Hupe2, M H Israel8, A Javaid9, J Lam12, K M Liewer5, S Y Lin10, T C Liu10, A Ludwig4, L Macchiarulo1, S Matsuno1, C Miki1, K Mulrey9, J Nam10, C J Naudet5, R J Nichol3, A Novikov6,7, E Oberla4, M Olmedo1, R Prechelt1, S Prohira6, B F Rauch8, J M Roberts1, A Romero-Wolf5, J W Russell1, D Saltzberg12, D Seckel9, H Schoorlemmer1, J Shiao10, S Stafford2, J Stockham6, M Stockham6, B Strutt12, G S Varner1, A G Vieregg4, S H Wang10, S A Wissel13.
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.Entities:
Year: 2018 PMID： 30387639 DOI： 10.1103/PhysRevLett.121.161102
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161