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T: Fachverband Teilchenphysik

T 8: Neutrino astronomy I

T 8.4: Vortrag

Montag, 30. März 2020, 17:20–17:35, H-HS VI

Cosmic ray detection efficiency and implications for in-ice radio detectors for high-energy neutrinos — •Lilly Pyras for the RNO-G collaboration — Humboldt-Universität zu Berlin — DESY Zeuthen

A promising technique to measure neutrinos above 10 PeV is the detection of the radio signals generated by the Askaryan effect. The effect is caused by neutrino-induced particle cascades in dense media i.e. ice. Starting in 2020 a new detector using this technique and containing in-ice detector strings will be deployed in Greenland. One of the main challenges of the data analysis will be distinguishing between a cosmic ray muon and a real neutrino event. By building the detector with surface antennas we can use the established method of radio detection of air showers to identify incoming muons and use these signals as a veto mechanism in the neutrino detection. The data is analysed utilizing a Python based software tool, NuRadioReco, a general reconstruction software used for both neutrino and air shower radio arrays. An efficient veto trigger will lend higher confidence in identifying neutrinos and prevent the false positive neutrino detections caused by muons. This report presents the development of this mechanism and analyses its performance.