Göttingen 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 75: Neutrino Astronomy IV

T 75.3: Vortrag

Donnerstag, 3. April 2025, 16:45–17:00, VG 1.105

Discrimination of Muon Bundles from Single Muons in IceCube — •Alexandra Scholz and Cristina Lagunas Gualda for the IceCube collaboration — Technical University of Munich, Germany

The detection of neutrino events from astrophysical sources is one of the main goals of the IceCube Neutrino Observatory, which is located at the geographic South Pole. Atmospheric muons and neutrinos produced in the interaction of cosmic ray particles with the atmosphere build a large background for such events. Atmospheric neutrinos are irreducible background and cannot be directly filtered out. Nevertheless, for IceCube’s northern sky the Earth serves as a shield for atmospheric muons, which often reach the detector in bundles. However, it also filters ultra-high energy (UHE) neutrino events. In order to detect UHE events, the whole sky has to be considered, leaving us with the problem of the enormous background of atmospheric muons. The strategy of this project is to discriminate muon bundles from single muons above 100 TeV, as single muons are the signature of astrophysical neutrino events in the detector. A graph neural network (GNN) will be used to classify the events based on CORSIKA simulations.

Keywords: neutrinos; muon bundles; IceCube; background