Abstract

The Double Chooz reactor neutrino experiment will be the next detector to search for a non vanishing θ13 mixing angle with unprecedented sensitivity, which might open the way to unveiling CP violation in the leptonic sector. The measurement of this angle will be based in a precise comparison of the antineutrino spectrum at two identical detectors located at different distances from the Chooz nuclear reactor cores in France. Double Chooz is particularly attractive because of its capability to measure sin2 (2θ13) to 3σ if sin2(2θ13) > 0.05 or to exclude sin2(2θ13) down to 0.03 at 90% C.L. for δm2 = 2.5 × 10-3 eV2 in three years of data taking with both detectors. The construction of the far detector starts in 2008 and the first neutrino results are expected in 2009. The current status of the experiment, its physics potential and design and expected performance of the detector are reviewed.

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