@article{8169b9f02a3f4dcfb95e9511aaeb6561,
title = "Characteristics of Four Upward-Pointing Cosmic-Ray-like Events Observed with ANITA",
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.",
author = "\{ANITA Collaboration\} and Gorham, \{P. W.\} and J. Nam and A. Romero-Wolf and S. Hoover and P. Allison and O. Banerjee and Beatty, \{J. J.\} and K. Belov and Besson, \{D. Z.\} and Binns, \{W. R.\} and V. Bugaev and P. Cao and C. Chen and P. Chen and Clem, \{J. M.\} and A. Connolly and B. Dailey and C. Deaconu and L. Cremonesi and Dowkontt, \{P. F.\} and Duvernois, \{M. A.\} and Field, \{R. C.\} and Fox, \{B. D.\} and D. Goldstein and J. Gordon and C. Hast and Hebert, \{C. L.\} and B. Hill and K. Hughes and R. Hupe and Israel, \{M. H.\} and A. Javaid and J. Kowalski and J. Lam and Learned, \{J. G.\} and Liewer, \{K. M.\} and Liu, \{T. C.\} and Link, \{J. T.\} and E. Lusczek and S. Matsuno and Mercurio, \{B. C.\} and C. Miki and P. Mio{\v c}inovi{\'c} and M. Mottram and K. Mulrey and Naudet, \{C. J.\} and J. Ng and Nichol, \{R. J.\} and K. Palladino and Rauch, \{B. F.\} and K. Reil and J. Roberts and M. Rosen and B. Rotter and J. Russell and L. Ruckman and D. Saltzberg and D. Seckel and H. Schoorlemmer and S. Stafford and J. Stockham and M. Stockham and B. Strutt and K. Tatem and Varner, \{G. S.\} and Vieregg, \{A. G.\} and D. Walz and Wissel, \{S. A.\} and F. Wu",
note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = aug,
day = "8",
doi = "10.1103/PhysRevLett.117.071101",
language = "English",
volume = "117",
journal = "Physical Review Letters",
issn = "0031-9007",
number = "7",
}