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Reactor (nu)over-bar(e) disappearance in the Double Chooz experiment
Journal article   Open access

Reactor (nu)over-bar(e) disappearance in the Double Chooz experiment

Y. Abe, C. Aberle, J. C. dos Anjos, J. C. Barriere, M. Bergevin, A. Bernstein, T. J. C. Bezerra, L. Bezrukhov, E. Blucher, N. S. Bowden, …
Physical review. D, Particles, fields, gravitation, and cosmology, v 86(5)
18 Sep 2012
url
https://doi.org/10.1103/physrevd.86.052008View
Accepted (AM)Open Access (Publisher-Specific) Open
url
https://doi.org/10.1103/PhysRevD.86.052008View
Published, Version of Record (VoR) Open

Abstract

Astronomy & Astrophysics Physical Sciences Physics Physics, Particles & Fields Science & Technology
The Double Chooz experiment has observed 8249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power X detector mass X live time) exposure using a 10.3 m(3) fiducial volume detector located at 1050 m from the reactor cores of the Chooz nuclear power plant in France. The expectation in case of theta(13) = 0 is 8937 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 +/- 0.030(stat) +/- 0.025(syst). The data exclude the no-oscillation hypothesis at 99.8% CL (2.9 sigma).

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Astronomy & Astrophysics
Physics, Particles & Fields
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