Mathis Börner

Dortmund

Unfolding of the Muon Neutrino Energy Spectrum with Multiple Years of IceCube Data(pdf)

The next step for neutrino astronomy is to identify the first point source for high energetic astrophysical neutrinos. The most promising approach is to use muon neutrinos in in such analyses. The muon neutrino spectrum consists of three components: conventional, prompt (both atmospheric) and the already mentioned astrophysical component. A good understanding of the atmospheric energy spectrum can help to increase the sensitivity of point source searches. Over the last years several unfolding analyses showed that this model independent approach can give unique insight in the shape of the energy spectrum. In the analysis presented here, for the first time multiple years of IceCube data will be used in an unfolding analysis. This will lower the uncertainties on the results and provide sufficient data to determine the spectrum in multiple zenith regions. The analysis of different zenith regions can help to disentangle the different components of the atmospheric neutrino flux.