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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 59: Neutrino astronomy II

T 59.8: Vortrag

Mittwoch, 1. April 2020, 18:15–18:30, L-2.004

Towards a Global Fit of the Diffuse Neutrino Flux with IceCube: Novel Simulation TechniquesJöran Stettner, Erik Ganster, and •Christian Haack for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen

The IceCube Neutrino Observatory at the South Pole discovered a flux of astrophysical neutrinos at TeVPeV energies and started the era of neutrino astronomy. However, the energy spectrum of the observed diffuse flux is not yet fully understood: The measured fluxes differ between multiple detection channels such as high-energy starting events (HESE), cascades and through-going muons from the Northern Hemisphere. Here, we present the status of a combined analysis of all high-energy event samples which is currently being prepared. One important ingredient is a joint Monte-Carlo (MC) simulation that enables a consistent treatment of systematic uncertainties throughout the different event topologies. We present novel ideas how to efficiently produce large-scale MC-simulations covering a wide range of systematic uncertainties and how to apply it in likelihood analyses.

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