Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 37: Neutrino physics without accelerators IV

T 37.2: Talk

Tuesday, March 31, 2020, 17:15–17:30, L-2.017

New Analyses of Atmospheric Neutrino Oscillations with IceCube DeepCore — •Alexander Trettin for the IceCube collaboration — DESY Zeuthen

The low energy extension to the IceCube Neutrino Observatory, DeepCore, has now been taking data for more than eight years. Analyses previously published have used three years of its data to make competitive measurements of the atmospheric neutrino oscillation parameters. This talk presents a new analysis being developed using eight years of detector live time. An overview is given of the improvements to the event selection that yield a data sample of highly pure atmospheric neutrino events, as well as new reconstruction methods that achieve better resolutions and neutrino flavor separation. Together, these improvements lead to an atmospheric neutrino oscillation analysis with unprecedented sensitivity.