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Reactor ν¯e disappearance in the Double Chooz experiment

Journal Article · · Physical Review. D, Particles, Fields, Gravitation and Cosmology
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  1. UC Berkeley
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 10.3 m3 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 thus interpreted as evidence of electron antineutrino disappearance. From a rate plus spectral shape analysis we find sin sup>22θ13 = 0.109 ± 0.030( stat ) ± 0.025( syst ). The data exclude the no-oscillation hypothesis at 99.8% CL (2.9σ).
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Science and Security Consortium (NSSC); USDOE National Nuclear Security Administration (NNSA). Nuclear Science and Security Consortium (NSSC)
Contributing Organization:
Double Chooz Collaboration
Grant/Contract Number:
NA0000979
OSTI ID:
1454551
Alternate ID(s):
OSTI ID: 1103385
Journal Information:
Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Issue: 5 Vol. 86; ISSN PRVDAQ; ISSN 1550-7998
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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