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Title: Indication of Reactor ν ¯ e Disappearance in the Double Chooz Experiment

Journal Article · · Physical Review Letters
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The Double Chooz Experiment presents an indication of reactor electron antineutrino disappearance consistent with neutrino oscillations. A ratio of 0.944 ± 0.016 (stat) ± 0.040 (syst) observed to predicted events was obtained in 101 days of running at the Chooz Nuclear Power Plant in France, with two 4.25 GWth reactors. The results were obtained from a single 10 m3 fiducial volume detector located 1050 m from the two reactor cores. The reactor antineutrino flux prediction used the Bugey4 measurement as an anchor point. The deficit can be interpreted as an indication of a non-zero value of the still unmeasured neutrino mixing parameter sin 213. Analyzing both the rate of the prompt positrons and their energy spectrum we find sin 213 = 0.086 ± 0.041 (stat) ± 0.030 (syst), or, at 90% CL, 0.015 < sin 213 < 0.16.

Research Organization:
Nuclear Science and Security Consortium (NSSC)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
Double Chooz Collaboration
Grant/Contract Number:
NA0000979
OSTI ID:
1454562
Alternate ID(s):
OSTI ID: 1098599
Journal Information:
Physical Review Letters, Vol. 108, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 964 works
Citation information provided by
Web of Science

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