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    Self-veto approaches to reject atmospheric neutrinos in KM3NeT/ARCA

    Access Status
    Fulltext not available
    Authors
    Heid, T.
    James, Clancy
    Pikounis, K.
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Heid, T. and James, C. and Pikounis, K. 2015. Self-veto approaches to reject atmospheric neutrinos in KM3NeT/ARCA.
    Source Title
    Proceedings of Science
    ISSN
    1824-8039
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/72607
    Collection
    • Curtin Research Publications
    Abstract

    The main objective of the future neutrino telescope KM3NeT/ARCA is the detection and measurement of high-energy extraterrestrial neutrinos. Atmospheric neutrinos, which are produced in particle showers in the Earth's upper atmosphere, represent the main background to this signal. Muon bundles which accompany down-going atmospheric neutrinos can be used to differentiate the latter from their extraterrestrial counterparts and thus to identify cosmic neutrino signals from the upper hemisphere. The program package CORSIKA has been used for simulating extensive air showers. These particle showers contain many particle types, but the only particle type except neutrinos penetrating the water layer above the detector are muons. A veto strategy against atmospheric neutrinos has been developed which uses the detector signals induced by these muons. In particular these muons modify the observed topology of neutrino-induced events, with a significant effect on different reconstruction parameters. Making use of these effects, most of the downward-going atmospheric neutrinos can be rejected. The corresponding analysis methods and results are reported.

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