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T: Fachverband Teilchenphysik
T 18: Neutrino Astronomy 1
T 18.8: Talk
Monday, March 21, 2022, 18:00–18:15, T-H31
A Combined Analysis of IceCube's High Energy Muon Tracks and Cascades Neutrino Data — •Erik Ganster1, Markus Ackermann2, Jakob Böttcher1, Philipp Fürst1, Jonas Hellrung1, Richard Naab2, Georg Schwefer1, Roman Suveyzdis1, and Christopher Wiebusch1 for the IceCube collaboration — 1Physics Institute III B, RWTH Aachen University, Germany — 2DESY, Zeuthen, Germany
The IceCube Neutrino Observatory is observing a diffuse flux of high-energy astrophysical neutrinos in multiple detection channels. We combine two of these channels, through-going muon tracks and contained cascades, in a single analysis that employs a consistent treatment of signal and background as well as systematic uncertainties in a global fit. Then, the complementary information from the two channels reduces the overall uncertainties in signal and background. This improves our understanding of the astrophysical neutrino flux properties: measuring the energy spectrum and testing the flux composition. We will describe the method of this global fit and present first results from 10 years of IceCube neutrino data.