Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 87: Neutrino physics 11

T 87.6: Vortrag

Donnerstag, 7. März 2024, 17:15–17:30, Geb. 30.22: Gaede-HS

First measurement of tau appearance with KM3NeT/ORCA — •Nicole Geißelbrecht for the ANTARES-KM3NET-ERLANGEN collaboration — ECAP, FAU Erlangen-Nürnberg

KM3NeT/ORCA is a water Cherenkov detector currently under construction in the Mediterranean Sea, aiming for the determination of the neutrino mass ordering. It is optimised for the study of atmospheric neutrinos.

Upon production, the atmospheric neutrino flux at GeV energies is dominated by electron and muon neutrinos. However, the tau neutrino component of the atmospheric neutrino flux at the Earth is considerably increased due to neutrino oscillations. This phenomenon is also known as tau appearance and can, among other things, be used to probe neutrino oscillations and test the unitarity of the PMNS matrix. This is one of the main goals of the KM3NeT/ORCA detector that can already be addressed during the ongoing construction. A first measurement has been performed with an early sub-array of the final detector configuration. In this talk, the first results and prospects for the future will be presented.

Keywords: Neutrino Oscillations; Tau Appearance; KM3NeT/ORCA