Improved measurement of electron antineutrino disappearance at Daya Bay

By F. P. 安. An 鹏, Q. 安. An 琪, J. Z. 白. Bai 芝, A. Balantekin, H. Band, W. Beriguete, M. Bishai, S. Blyth, R. Brown, G. F. 曹. Cao 富 and 221 more. 2012

235 citations recorded by the source corpus.

We report an improved measurement of the neutrino mixing angle θ13 from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin22θ13 with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GWth were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944±0.007(stat.)±0.003(syst.). An analysis of the relative rates in six detectors finds sin22θ13=0.089±0.010(stat.)±0.005(syst.) in a three-neutrino framework.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e7a2b7e17f91f2035fc2f46f16ef0e4e94231189

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In Nuclear and High Energy Physics

1. M. Gonzalez-Garcia
2. M. Maltoni
3. I. Perić
4. A. Blondel
5. M. Pohl
6. T. Schwetz
7. M. Tórtola
8. Y. Farzan

Citations in the corpus

• Determination of matter potential from global analysis of neutrino oscillation data (2013, background): “For oscillation signals at – 11 – reactor experiments, besides KamLAND, we include data from the finalized experiments CHOOZ [79] (energy spectrum data) and Palo Verde [80] (total rate) together with the recent spectrum from Double Chooz with 227.9 days live time [81], and the total even rates in th”
• Research Proposal for an Experiment to Search for the Decay $\mu \to eee$ (2013, methodology): “Currently the most accurate measurement is provided by the Daya Bay reactor neutrino experiment [19] yielding sin(2)(2θ13) = 0.”