The Reactor Experiment for Neutrino Oscillation (RENO) has been taking electron antineutrino (νₑ) data from the reactors in Yonggwang, Korea, using two identical detectors since August 2011. Using roughly 500 live days of data through January 2013 we observe 290 775 (31 514) reactor νₑ candidate events with 2.8% (4.9%) background in the near (far) detector. The observed visible positron spectra from the reactor νₑ events in both detectors show a discrepancy around 5 MeV with regard to the prediction from the current reactor νₑ model. Based on a far-to-near ratio measurement using the spectral and rate information, we have obtained sin²2θ₁₃=0.082±0.009(stat.)±0.006(syst.) and $|{{Δ}}{m}ₑₑ²|=[2.6{2}_{{-}0.23}+0.21(stat.{)}_{{-}0.13}+0.12(syst.)]×{}{10}^{{-}3} {eV}²$.
No takes yet. Share an insight, caveat, or question.
Seo et al. (2018) studied this question.