Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 90: Neutrinoastronomie 5

T 90.4: Vortrag

Donnerstag, 7. März 2013, 17:30–17:45, HSZ-E03

Reconstruction methods for detecting extreme high-energy tau neutrinos with IceCube — •Patrick Hallen, Martin Bissok, Marius Wallraff, and Christopher Wiebusch — III. Physikalisches Institut, RWTH Aachen, D-52056 Aachen

One of IceCube's main tasks is the search for cosmic neutrinos. The main background for this search are atmospheric neutrinos. The expected flux of cosmic neutrinos is approximately equal for all three flavors, due to flavor oscillation over cosmic baselines. The background of atmospheric tau neutrinos is small compared to the background of atmospheric muon and electron neutrinos, because atmospheric tau neutrinos are only produced by prompt decays of rare charm hadrons.

At PeV energies charged-current interactions of tau neutrinos create a unique double bang signature of two separated cascades in the detector due to the macroscopic decay length of the tau in the order of 100 meters. This talk discusses reconstruction methods for identifying tau-neutrino-induced high-energy cascades.