Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 59: Neutrino astronomy II

T 59.7: Vortrag

Mittwoch, 1. April 2020, 18:00–18:15, L-2.004

Perspectives of a Global Fit of IceCubes Diffuse Neutrino Flux — •Erik Ganster, Christian Haack, Jöran Stettner, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen University

The IceCube Neutrino Observatory has first observed a flux of high-energy astrophysical neutrinos in 2013. Since then, this observation has been confirmed in multiple analyses based on different event selections and topologies such as: high-energy starting events (HESE), cascades and throughgoing muon-tracks. This diffuse flux is typically modelled by a power-law energy spectrum. However, the measured flux properties differ between these complementary analyses. We will report on the status of a combined analysis of all high-energy neutrino data from IceCube which is currently being prepared. First studies on the sensitivity of this 'global fit' to improve the measurement of the flux properties will be shown.