Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 71: Neutrino Astronomy 3

T 71.7: Vortrag

Mittwoch, 23. März 2022, 17:45–18:00, T-H30

Cosmic ray detection efficiency and implications for in-ice radio detectors for high-energy neutrinos — •Lilly Pyras for the RNO-G Collaboration collaboration — DESY, Platanenallee 6, 15738 Zeuthen, Germany — Erlangen Center for Astroparticle Physics (ECAP), Friedrich-Alexander-University Erlangen-Nuremberg, 91058 Erlangen, Germany

A promising technique to measure neutrinos above 10 PeV is the detection of radio signals generated by the Askaryan effect. The emission is caused by neutrino-induced particle cascades in dense media e.g. ice. Since 2021 the Radio Neutrino Observatory Greenland (RNO-G) is being deployed, consisting of in-ice strings of antennas down to 100 m and antennas closer at the surface. One of the main challenges of the data analysis is distinguishing between background stemming from cosmic rays e.g. high energy muons 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 veto mechanism in the neutrino detection. 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 tagging incoming air showers as veto and analyses its performance.