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Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 72: Cosmic Ray 3

T 72.3: Talk

Wednesday, March 23, 2022, 16:45–17:00, T-H31

Towards the Energy Spectrum of Cosmic Rays using Atmospheric Stopping Muons in IceCube — •Janina Bolles, Karolin Hymon, Johannes Werthebach, Lucas Witthaus, and Jan Soedingrekso for the IceCube collaboration — Astroparticle Physics WG Rhode, TU Dortmund University, Germany

In the IceCube Neutrino Observatory the main type of detected events are muons being produced by cosmic ray particles interacting with the Earth's atmosphere. In the context of neutrino analyses, these muons are the dominant background. In case of cosmic ray physics the energy losses of the muons within the detector can be used as an indicator to reconstruct the cosmic ray energy spectrum.

In this work, muon events stopping inside the detector are selected to use the range to the stopping point as a proxy for the muon energy. This approach takes advantage of the high statistics of atmospheric muons. Strict cuts on the reconstruction can be applied to obtain an event sample of single muons with high resolution. The reconstructed range of the muons can be used to estimate the cosmic ray energy spectrum. First results of the unfolded cosmic ray flux are presented.

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