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Reactor electron antineutrino disappearance in the Double Chooz experiment

MPS-Authors
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Aberle,  Christoph
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Buck,  Christian
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Hartman,  F.X.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Haser,  Julia
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Kaether,  F.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Langbrandtner,  C.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Lindner,  M.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

Reinhold,  B.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Watanabe,  Hideki
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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1207.6632
(Preprint), 769KB

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Citation

Abe, Y., Aberle, C., Anjos, J. C. d., Barriere, J. C., Bergevin, M., Bernstein, A., et al. (2012). Reactor electron antineutrino disappearance in the Double Chooz experiment. Physical Review D, 86(05): 052008, pp. 1-21. doi:10.1103/PhysRevD.86.052008.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-152A-4
Abstract
The Double Chooz experiment has observed 8,249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power x detector mass x livetime) exposure using a 10.3 cubic meter fiducial volume detector located at 1050 m from the reactor cores of the Chooz nuclear power plant in France. The expectation in case of theta13 = 0 is 8,937 events. The deficit is interpreted as evidence of electron antineutrino disappearance. From a rate plus spectral shape analysis we find sin^2 2{\theta}13 = 0.109 \pm 0.030(stat) \pm 0.025(syst). The data exclude the no-oscillation hypothesis at 99.8% CL (2.9{\sigma}).