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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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
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Antineutrinos
Neutrinos
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creator Lasserre, Thierry
Mention, Guillaume
Cribier, Michel
Collin, Antoine
Durand, Vincent
Fischer, Vincent
Gaffiot, Jonathan
Lhuillier, David
Letourneau, Alain
Vivier, Matthieu
description 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.
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subjects Antineutrinos
Neutrinos
title Comment on Phys. Rev. Lett. 108, 191802 (2012): "Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment"
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