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- Title
Observation of reactor antineutrino disappearance using delayed neutron capture on hydrogen at RENO.
- Authors
Shin, C. D.; Atif, Z.; Bak, G.; Choi, J. H.; Jang, H. I.; Jang, J. S.; Jeon, S. H.; Joo, K. K.; Ju, K.; Jung, D. E.; Kim, J. G.; Kim, J. Y.; Kim, S. B.; Kim, S. Y.; Kim, W.; Kwon, E.; Lee, D. H.; Lee, H. G.; Lee, Y. C.; Lim, I. T.
- Abstract
The Reactor Experiment for Neutrino Oscillation (RENO) experiment has been taking data using two identical liquid scintillator detectors since August 2011. The experiment has observed the disappearance of reactor neutrinos in their interactions with free protons, followed by neutron capture on hydrogen (n-H). Based on 1500 live days of data taken with 16.8 GWth reactors at the Hanbit Nuclear Power Plant in Korea, the near (far) detector observes 567690 (90747) electron antineutrino candidate events with the n-H data. This provides an independent measurement of neutrino mixing angle θ13 and a consistency check on the validity of the result obtained from the data with neutron capture on Gadolinium (n-Gd). Furthermore, it provides an important cross-check on the systematic uncertainties of the n-Gd measurement. Based on a rate-only analysis, we obtain sin2 2θ13 = 0.086 ± 0.008(stat.) ± 0.014(syst.). The combination of this result with that of n-Gd is also reported.
- Subjects
RENO (Nev.); SOUTH Korea; DELAYED neutrons; NEUTRON capture; NEUTRINO interactions; NEUTRINO mass; NUCLEAR power plants; LIQUID scintillators; PROTON-proton interactions; NUCLEAR reactors
- Publication
Journal of High Energy Physics, 2020, Vol 2020, Issue 4, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP04(2020)029