Reactor ν¯e disappearance in the Double Chooz experiment

Y. Abe et al. (Double Chooz Collaboration)
Phys. Rev. D 86, 052008 – Published 18 September 2012

Abstract

The Double Chooz experiment has observed 8249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power×detector mass×live time) exposure using a 10.3m3 fiducial volume detector located at 1050 m from the reactor cores of the Chooz nuclear power plant in France. The expectation in case of θ13=0 is 8937 events. The deficit is interpreted as evidence of electron antineutrino disappearance. From a rate plus spectral shape analysis we find sin22θ13=0.109±0.030(stat)±0.025(syst). The data exclude the no-oscillation hypothesis at 99.8% CL (2.9σ).

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  • Received 24 July 2012

DOI:https://doi.org/10.1103/PhysRevD.86.052008

© 2012 American Physical Society

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Vol. 86, Iss. 5 — 1 September 2012

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