Comment on Phys. Rev. Lett. 108, 191802 (2012): "Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment"

The RENO experiment recently reported the disappearance of reactor electron antineutrinos consistent with neutrino oscillations, with a significance of 4.9 standard deviations. The published ratio of observed to expected number of antineutrinos in the far detector is R=0.920 +-0.009(stat.) +-0.014(s...

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Bibliographic Details
Published in:arXiv.org 2012-05
Main Authors: Lasserre, Thierry, Mention, Guillaume, Cribier, Michel, Collin, Antoine, Durand, Vincent, Fischer, Vincent, Gaffiot, Jonathan, Lhuillier, David, Letourneau, Alain, Vivier, Matthieu
Format: Article
Language:English
Subjects:
Antineutrinos
Neutrinos
Online Access:Get full text
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Summary:The RENO experiment recently reported the disappearance of reactor electron antineutrinos consistent with neutrino oscillations, with a significance of 4.9 standard deviations. The published ratio of observed to expected number of antineutrinos in the far detector is R=0.920 +-0.009(stat.) +-0.014(syst.) and corresponds to sin^2 2theta13 = 0.113 +-0.013(stat.) +-0.019(syst), using a rate-only analysis. In this letter we reanalyze the data and we find a ratio R=0.903 +-0.01(stat.), leading to sin^2 2theta13 = 0.135. Moreover we show that the sin^2 2theta13 measurement still depend of the prompt high energy bound beyond 4 MeV, contrarily to the expectation based on neutrino oscillation.
ISSN:2331-8422