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Reactor Experiment for Neutrino Oscillation

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Reactor Experiment for Neutrino Oscillation

RENO (Reactor Experiment for Neutrino Oscillations) is a short baseline reactor neutrino oscillation experiment in South Korea. The experiment was designed to either measure or set a limit on θ13, a neutrino oscillation parameter responsible for changing electron neutrinos into other neutrinos. RENO has two identical detectors, placed at distances of 294 m and 1383 m, that observe neutrinos produced by six reactors at the Hanbit Nuclear Power Plant (the old name: the Yeonggwang Nuclear Power Plant) in Korea.

On 3 April 2012, with some corrections on 8 April, the RENO collaboration announced a 4.9σ observation of θ13 ≠ 0, with

\sin^2 2 \theta_{13} = 0.113 \pm 0.013({\rm stat.}) \pm 0.019({\rm syst.}) [1][2]

This measurement confirmed a similar result announced by the Daya Bay Experiment three weeks before and is consistent with earlier, but less significant results by T2K, MINOS and Double Chooz.

RENO released updated results[3] in December 2012:

\sin^2 2 \theta_{13} = 0.100 \pm 0.010({\rm stat.}) \pm 0.015({\rm syst.})

References

  1. ^ RENO Collaboration (2012-04-03). "Observation of electron-antineutrino disappearance at RENO". Physical Review Letters 108 (18): 191802.  
  2. ^ RENO Collaboration (2012-04-04). "Announcement of the First Results from RENO: Observation of the Weakest Neutrino Transformation". Interactions NewsWire. 
  3. ^ arXiv:1312.4111

See also

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