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Electron-antineutrino disappearance seen by Daya Bay reactor neutrino experiment

Published online by Cambridge University Press:  30 January 2013

Ruiguang Wang
Ruiguang Wang*
Affiliation:
Institute of High Energy Physics, Beijing, 100049, China email: wangrg@mail.ihep.ac.cn.
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Abstract

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The Daya Bay Reactor Neutrino Experiment has measured a non-zero value for the neutrino mixing angle θ13 with a significance of 7.7 standard deviations. Antineutrinos from six 2.9 GWth reactors were detected in six antineutrino detectors deployed in two near and one far underground experimental halls. With a 116.8 kton-GWth-day live-time exposure in 139 days, 28,909 (205,308) electron-antineutrino candidates were detected at the far hall (near hall). The ratio of the observed to expected number of antineutrinos at the far hall is R = 0.944 ± 0.007 ± 0.003 (syst). A rate-only analysis finds sin22θ13 = 0.089 ± 0.010 (stat) ± 0.005 (syst) in a three-neutrino framework.

Keywords

Neutrino oscillationreactor neutrinomixing angle θ13Daya Bay
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S288: Astrophysics from Antarctica , August 2012 , pp. 326 - 328
Copyright
Copyright © International Astronomical Union 2013

References

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An, F. P.et al. (Daya Bay Collaboration) 2013, Chinese Phys. C, 3, 7, 011001CrossRefGoogle Scholar