SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 16: Neutrino Astronomy I

T 16.3: Talk

Monday, March 20, 2023, 17:00–17:15, POT/0112

Study of high-energetic muon deflections * — •Pascal Gutjahr — TU Dortmund University, Dortmund, Germany

The analysis of incoming muon-neutrinos and muons relies on the reconstruction of the detected muons. In general, the energy and the direction of an incoming particle are estimated via likelihood methods. With new reconstruction algorithms and hardware optimizations, the direction of an incoming muon can be measured with an angular resolution lower than 1 degree.

However, high-energetic muons are able to travel many kilometers through dense media like ice and water. In these media, the muons interact very frequently with energy losses of up to 90% of the muon energy and even larger energy losses are possible. In each interaction, there is a momentum transfer which leads to a small deflection of the initial muon direction.

In this presentation, the lepton simulation framework PROPOSAL is used to estimate the accumulated muon deflection. Muons with different energies are propagated through ice and water over several distances. Data-Monte-Carlo comparisons as well as comparisons with the simulation tools MUSIC and Geant4 are shown. Finally, the impact of muon deflections for large scale neutrino telescopes is discussed. *Supported by DFG (SFB 876 and 1491) and BMBF