Wuppertal 2015 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 74: Neutrinoastronomie II

T 74.3: Vortrag

Mittwoch, 11. März 2015, 17:20–17:35, I.12.02 (HS 31)

Self-veto strategy for KM3NeT — •Thomas Heid for the ANTARES-KM3NeT-Erlangen collaboration — ECAP - FAU Erlangen-Nürnberg

The planned Neutrino telescope KM3NeT looks for extraterrestrial neutrinos. Atmospheric neutrinos, which are produced in particle showers in the Earth's upper atmosphere, present the main background to this signal. For analysing the data one has to know that background. Additionally Muon bundles which accompany atmospheric neutrinos can be used to differentiate them from their extraterrestrial counterparts to keep the background as low as possible.

The particle showers also produce many other particles, but beside neutrinos the only particles surviving up to the ~3000m depth of the detector are muons. A preliminary veto strategy is described which uses these additional particles. Due to the additional muons, the topology of the events changes. This results in different reconstruction parameters. If the topology of events is analysed most of the downward-going atmospheric neutrinos can be rejected. For realistic composition of atmospheric showers the program package CORSIKA for simulating extensive air showers is used.