Topic
CHOOZ
About: CHOOZ is a research topic. Over the lifetime, 466 publications have been published within this topic receiving 13475 citations.
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TL;DR: The Double Chooz experiment presents an indication of reactor electron antineutrino disappearance consistent with neutrino oscillations, and an observed-to-predicted ratio of events of 0.944±0.016 and a deficit can be interpreted as a nonzero value of the still unmeasured neutrinos mixing parameter sin(2)2θ(13).
Abstract: The Double Chooz experiment presents an indication of reactor electron antineutrino disappearance consistent with neutrino oscillations. An observed-to-predicted ratio of events of 0.944±0.016(stat)±0.040(syst) was obtained in 101 days of running at the Chooz nuclear power plant in France, with two 4.25GWth reactors. The results were obtained from a single 10m3 fiducial volume detector located 1050 m from the two reactor cores. The reactor antineutrino flux prediction used the Bugey4 flux measurement after correction for differences in core composition. The deficit can be interpreted as an indication of a nonzero value of the still unmeasured neutrino mixing parameter sin22θ13. Analyzing both the rate of the prompt positrons and their energy spectrum, we find sin22θ13=0.086±0.041(stat)±0.030(syst), or, at 90% C.L., 0.017
1,214 citations
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TL;DR: In this article, the authors present new results based on the entire CHOOZ (The CHooZ experiment is named after the new nuclear power station operated by Electricite de France (EdF) near the village of Chooz in the Ardennes region of France) data sample.
1,146 citations
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TL;DR: In this paper, no evidence for neutrino oscillations in the anti-nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10 −4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m*2.
Abstract: We present new results based on the entire CHOOZ data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the anti_nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10**-4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m**2. Lower sensitivity results, based only on the comparison of the positron spectra from the two different-distance nuclear reactors, are also presented; these are independent of the absolute normalization of the anti_nue flux, the cross section, the number of target protons and the detector efficiencies.
941 citations
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TL;DR: In this article, the authors present a complete description of the CHOOZ experiment, including the source and detector, the calibration methods and stability checks, the event reconstruction procedures and the Monte Carlo simulation.
Abstract: This final article about the CHOOZ experiment presents a complete description of the $\bar{
u}_e$
source and detector, the calibration methods and stability checks, the event reconstruction procedures and the Monte Carlo simulation. The data analysis, systematic effects and the methods used to reach our conclusions are fully discussed. Some new remarks are presented on the deduction of the confidence limits and on the correct treatment of systematic errors.
898 citations
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TL;DR: In this paper, a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture was presented, including new data which appeared since their previous analysis.
758 citations