Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 61: Neutrinoastronomie III

T 61.3: Talk

Tuesday, March 1, 2016, 17:20–17:35, VMP9 SR 08

Unfolding Measurement of the Atmospheric Muon Neutrino Spectrum using IceCube — •Mathis Börner, Tim Ruhe, Maximilian Meier, Philipp Schlunder, Thorben Menne, and Tomasz Fuchs for the IceCube collaboration — Dept. of Physics, Technical University of Dortmund, 44227 Dortmund, Germany

IceCube is a cubic kilometer neutrino observatory located at the geographic South Pole. With its huge volume, the detector is well suited for measurements of the atmospheric muon neutrino energy spectrum. Over the last years, several unfolding analyses for single years were able to provide model independent measurements for the northern hemisphere in an energy region between 200 GeV and 3.2 PeV. In this talk, the extension of the analyses to four additional years of data is presented. With this significant enlargement of the data basis, it is possible to reanalyze the full northern hemisphere with smaller statistical errors. Moreover, the spectrum can be unfolded in several small zenith bands. Measurements of the energy spectrum for different zenith regions provide further information on the composition and the shape of the flux.