Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 37: Neutrinoastronomie II
T 37.2: Vortrag
Montag, 29. Februar 2016, 17:05–17:20, VMP9 SR 08
ORCA sensitivity to ντ appearance — •Steffen Hallmann for the ANTARES-KM3NeT-Erlangen collaboration — ECAP / Universität Erlangen-Nürnberg
The KM3NeT collaboration has started the construction of ORCA, a densely instrumented water Cherenkov detector in the Mediterranean Sea. In the first construction phase, a prototype consisting of six detection lines will be installed. For the complete detector setup, 115 detection lines are planned. The primary science goal of ORCA is to resolve the neutrino mass hierarchy problem by measuring oscillations of atmospheric neutrinos (νµ and νe) produced in cosmic ray air-showers. In ORCA, the oscillation into ντ will be visible on a statistical basis as an excess over the flux from νµ and νe only.
The talk will present the sensitivities to observe ντ appearance with the prototype and the full ORCA detector. Precise determination of the ντ flux in ORCA will also give the opportunity to probe deviations from the normalisation expected from unitary mixing in the three neutrino framework.