Hamburg 2016 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 41: Neutrinoastronomie

T 41.4: Vortrag

Montag, 29. Februar 2016, 17:30–17:45, VMP9 SR 30

Search for Indications of the Neutrino Mass Hierarchy Using IceCube/DeepCore — •Martin Leuermann, Markus Vehring, Marius Wallraff, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen, Germany

In 2015, the Nobel prize in physics was awarded for "the discovery of neutrino oscillations, which shows that neutrinos have mass", showing the high relevance of neutrino masses for modern particle physics. However, the ordering of the three neutrino masses is still unknown and is often referred to as neutrino mass hierarchy. Its measurement is a major goal for future experiments. One strategy is to measure matter effects in the oscillation pattern of atmospheric neutrinos e.g. as proposed for the PINGU extension of the IceCube neutrino observatory. Already now, the IceCube/DeepCore detector at the Geographic South Pole can be used to search for this signature. In this talk, we present an analysis based on data taken between 2011 and 2015. Due to recent improvements in the detector's reconstruction performance and the quality of the data selection, a measurement on the significance level of 1 sigma is expected.