Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 31: Neutrinophysik mit Beschleunigern

T 31.1: Gruppenbericht

Freitag, 2. März 2012, 09:20–09:40, ZHG 105

The OPERA Experiment – Neutrino Oscillation Search — •Annika Hollnagel — Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, 22761, Hamburg

The primary goal of the OPERA long-baseline neutrino oscillation experiment is the first direct detection of ν_µ→ ν_τ oscillations.
The hybrid OPERA detector consists of a target made from lead and photo emulsions, providing micrometric resolution, and electronic detector parts for on-line readout. It is located in the LNGS underground laboratory, at a baseline of 730   km from the SPS at CERN, where the ν_µ CNGS beam is produced.
The measurement of ν_τ appearance relies on the detection of the decay of τ leptons which are created in ν_τ charged current reactions. Data acquisition started in 2008, and numerous beam-induced events have been recorded, including the observation of a first ν_τ candidate event in 2009.
In this talk, the current status of the oscillation analysis will be presented.