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Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 72: Cosmic Ray 3

T 72.2: Talk

Wednesday, March 23, 2022, 16:30–16:45, T-H31

Unfolding the Atmospheric Muon Spectrum Using Stopping Muons in IceCube — •Lucas Witthaus, Karolin Hymon, Johannes Werthebach, Janina Bolles, and Jan Soedingrekso for the IceCube collaboration — Astroparticle Physics WG Rhode, TU Dortmund University, Germany

The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector located in the ice sheet close to the geographical South Pole. However, the majority of detected events is caused by atmospheric muons created in cosmic ray induced air showers in the upper layers of the atmosphere. Upon entering the antarctic ice, they lose energy in interactions with the surrounding matter, resulting in a limitation of their propagation length.

This talk presents the unfolding of the stopping muon depth intensity by means of a maximum likelihood approach. It is conducted on a subset of events, comprising single muons, which stop inside the IceCube detector. Deep neural networks are used to perform the event classification and reconstruction tasks.

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