Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 46: Neutrino Astronomy 2

T 46.6: Vortrag

Dienstag, 22. März 2022, 17:30–17:45, T-H31

NN-based parametrization of muon deflections simulated by PROPOSAL — •Pascal Gutjahr and Mirco Hünnefeld — Astroparticle Physics WG Rhode, TU Dortmund University, Germany

Neutrinos are fundamental particles that are nearly massless and not charged. This allows them to traverse the universe along a straight line without deflection. It makes them an excellent candidate for the search of astrophysical neutrino sources. This is achieved using detectors such as the IceCube Neutrino Observatory, which is located at the geographic South Pole. In the ice at a depth of 1450 m, Cherenkov radiation from the secondary particles of neutrino interactions is measured. Reconstruction of the daughter particles can then be used to infer the direction of the original neutrino. Due to the high energies in the GeV to PeV range, the deflection of the particles due to stochastic energy losses and multiple scattering is assumed to be negligible compared to the directional resolution of IceCube. This assumption may begins to be inaccurate as resolution increases and low energy muons are studied especially with respect to the IceCube upgrade. A study with the lepton propagator PROPOSAL is done to present expected deflections of muons for different energy ranges. The result is parametrized by a neural network.