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    Characteristics of Four Upward-Pointing Cosmic-Ray-like Events Observed with ANITA

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    Gorham_PhysRevLett_2016.pdf (430.5Kb)
    Issue Date
    2016-08-08
    Author
    Gorham, P. W.
    Nam, J.
    Romero-Wolf, A.
    Hoover, S.
    Allison, P.
    Banerjee, O.
    Beatty, J. J.
    Belov, K.
    Besson, David Zeke
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    © 2016 American Physical Society
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    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.
    URI
    http://hdl.handle.net/1808/25223
    DOI
    https://doi.org/10.1103/PhysRevLett.117.071101
    Collections
    • Physics & Astronomy Scholarly Works [1744]
    Citation
    P. W. Gorham et al. (ANITA Collaboration). Characteristics of Four Upward-Pointing Cosmic-Ray-like Events Observed with ANITA, 2016. American Physical Society. https://doi.org/10.1103/PhysRevLett.117.071101

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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