Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 35: Neutrinophysik an Beschleunigern / Andere Gebiete der experimentellen Teilchenphysik

T 35.1: Gruppenbericht

Freitag, 1. April 2011, 14:00–14:20, 30.23: 2-0

The OPERA Experiment – Observation of a First ν_τ Candidate Event in ν_µ→ ν_τ Appearance Search — •Annika Hollnagel, Joachim Ebert, Torben Ferber, Christoph Göllnitz, Caren Hagner, Martin Hierholzer, and Jan Lenkeit — Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg

The OPERA long-baseline neutrino oscillation experiment, situated at the Gran Sasso underground laboratory LNGS, has been designed for the first direct detection of ν_µ→ ν_τ oscillations in the nearly pure high-energy ν_µ CNGS beam created at CERN.
The detector is a hybrid apparatus, consisting of a lead/photo emulsion target, equipped with electronic detectors. Data aqcuisition started in 2008, and the detector has been running since, recording numerous beam-induced events.
The detection of ν_τ appearance takes place via the creation of τ leptons in charged current interactions and their subsequent decay. The topology and kinematics of the first ν_τ charged current candidate event shall be presented in detail.