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T: Fachverband Teilchenphysik

T 110: Niederenergie-Neutrinophysik/Suche nach Dunkler Materie 5

T 110.9: Talk

Wednesday, February 29, 2012, 18:50–19:05, ZHG 102

Atmospheric neutrino oscillations with IceCube — •Andreas Groß — TU München

IceCube is a cubic kilometer scale neutrino telescope completed in December 2010 optimized for neutrino energies on the TeV to PeV scale. With its more densely instrumented DeepCore subarray in the center, the performance in the 10 GeV to 1 TeV energy range has been improved significantly. We present the status of an analysis using IceCube and DeepCore in the 79-string configuration which operated from May 2010 until May 2011. In this configuration it is expected to be sensitive to standard neutrino oscillations by atmospheric muon neutrino disappearance with a maximum effect around 30 GeV and for vertically upgoing events. An atmospheric neutrino event sample is extracted from DeepCore data in the energy range 15 GeV - 150 GeV. Higher energetic atmospheric neutrinos detected by IceCube serve as a control sample for which no oscillation effects are expected.