Speaker
Maximilian Meier
Description
IceCube has discovered a diffuse astrophysical neutrino flux. The significant numbers of tau neutrinos expected due to neutrino mixing from traversing astronomical distances have yet to be observed. Since high-energy (>100 TeV) tau neutrino production in the Earth’s atmosphere is negligible, a tau detection confirms the astrophysical origin of the observed neutrino signal and helps improve the precise measurement of astrophysical neutrino flavor ratios. A tau neutrino undergoing charged current interaction in IceCube could produce double pulses in the sensor waveforms when the created tau reaches decay lengths of more than a few meters. A reoptimization of a double pulse tau neutrino filter requiring adjacent sensors to have double pulse waveforms improves the signal efficiency by 50% while maintaining similar level of backgrounds. The performance of this improved method and the resulting sensitivity to the astrophysical tau neutrino flux with 8 years of IceCube data will be presented.
| Authorship annotation | for the IceCube Collaboration |
|---|---|
| Session and Location | Wednesday Session, Poster Wall #176 (Ballroom) |
| Poster included in proceedings: | yes |
Primary author
Dr
Donglian Xu
(University of Wisconsin - Madison)
Co-author
Mr
Logan Wille
(University of Wisconsin - Madison)
