Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 1: Neutrinoastronomie I

T 1.2: Talk

Monday, March 19, 2018, 16:15–16:30, Philo-HS1

Improving the Reconstruction of Uncontained Events in IceCube — •Christian Haack and Christopher Wiebusch — III. Physikalisches Institut B, RWTH Aachen University

The IceCube Neutrino Observatory has measured the astrophysical neutrino flux from a few 10TeV to a few PeV using multiple detection channels. However, two unsolved questions require larger statistics at PeV energies, namely the existence of a high-energy cutoff and the Glashow resonance. So far, event selections involving cascade-like events induced by neutral-current or charged-current electron neutrino interactions, are limited to contained events, where the interaction vertex is located inside the detector volume. To increase the sensitivity of IceCube to higher energies, the restriction to contained events has to be mitigated, thus including also uncontained events in the neutrino samples. Due to their topology, these events are extremely difficult to reconstruct and to distinguish from the atmospheric muon background. In this talk we will present new reconstruction and background rejection techniques for uncontained events in IceCube.