Detection of Cascades induced by Atmospheric Neutrinos in the 79-string IceCube Detector
Chang Hyon Ha (for the IceCube Collaboration)
TL;DR
This paper reports the first detection of atmospheric neutrino-induced cascades in IceCube's DeepCore array at energies from 30 GeV to 10 TeV, enhancing understanding of neutrino physics.
Contribution
It introduces the first observation of atmospheric neutrino-induced cascades in IceCube, demonstrating the detector's capability to identify these events at relevant energies.
Findings
1029 neutrino events observed in 281 days
59% of events are cascades as predicted
Successful detection at energies between 30 GeV and 10 TeV
Abstract
Neutrino production and oscillation physics can be studied by utilizing the very high flux of atmospheric neutrinos observed with IceCube. In a Cherenkov medium such as ice, atmospheric muon neutrino interactions create tracks while cascades (showers) are produced by atmospheric electron neutrinos and by neutral current interactions of all flavors. We present the first detection of atmospheric neutrino-induced cascades at energies between 30 GeV and 10 TeV using the DeepCore array of the IceCube detector. Using 281 days of data, 1029 events are observed with 59% predicted to be cascades.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Neutrino Physics Research · Particle accelerators and beam dynamics