| Literature DB >> 27563945 |
P W Gorham1, J Nam2, A Romero-Wolf3, S Hoover4, P Allison5,6, O Banerjee5, J J Beatty5,6, K Belov3, D Z Besson7, W R Binns8, V Bugaev8, P Cao9, C Chen2, P Chen2, J M Clem9, A Connolly5,6, B Dailey5, C Deaconu10, L Cremonesi11, P F Dowkontt4, M A DuVernois1, R C Field12, B D Fox1, D Goldstein13, J Gordon5, C Hast12, C L Hebert1, B Hill1, K Hughes5, R Hupe5, M H Israel8, A Javaid9, J Kowalski1, J Lam4, J G Learned1, K M Liewer3, T C Liu2, J T Link1, E Lusczek14, S Matsuno1, B C Mercurio5, C Miki1, P Miočinović1, M Mottram11, K Mulrey9, C J Naudet3, J Ng12, R J Nichol11, K Palladino5, B F Rauch8, K Reil12, J Roberts1, M Rosen1, B Rotter1, J Russell1, L Ruckman1, D Saltzberg4, D Seckel9, H Schoorlemmer1, S Stafford5, J Stockham7, M Stockham7, B Strutt11, K Tatem1, G S Varner1, A G Vieregg10, D Walz12, S A Wissel15, F Wu4.
Abstract
We report on four radio-detected cosmic-ray (CR) or CR-like events observed with the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload. Two of the four were previously identified as stratospheric CR air showers during the ANITA-I flight. A third stratospheric CR was detected during the ANITA-II flight. Here, we report on characteristics of these three unusual CR events, which develop nearly horizontally, 20-30 km above the surface of Earth. In addition, we report on a fourth steeply upward-pointing ANITA-I CR-like radio event which has characteristics consistent with a primary that emerged from the surface of the ice. This suggests a possible τ-lepton decay as the origin of this event, but such an interpretation would require significant suppression of the standard model τ-neutrino cross section.Entities:
Year: 2016 PMID： 27563945 DOI： 10.1103/PhysRevLett.117.071101
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161