Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Neutrino Astronomy 1

T 18.8: Vortrag

Montag, 21. März 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.