@article{2d897de5c95c4acbb3f69e32f2c76051,
title = "Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment",
abstract = "A measurement of electron antineutrino oscillation by the Daya Bay Reactor Neutrino Experiment is described in detail. Six 2.9-GWth nuclear power reactors of the Daya Bay and Ling Ao nuclear power facilities served as intense sources of νe's. Comparison of the νe rate and energy spectrum measured by antineutrino detectors far from the nuclear reactors (∼1500-1950 m) relative to detectors near the reactors (∼350-600 m) allowed a precise measurement of νe disappearance. More than 2.5 million νe inverse beta-decay interactions were observed, based on the combination of 217 days of operation of six antineutrino detectors (December, 2011-July, 2012) with a subsequent 1013 days using the complete configuration of eight detectors (October, 2012-July, 2015). The νe rate observed at the far detectors relative to the near detectors showed a significant deficit, R=0.949±0.002(stat)±0.002(syst). The energy dependence of νe disappearance showed the distinct variation predicted by neutrino oscillation. Analysis using an approximation for the three-flavor oscillation probability yielded the flavor-mixing angle sin22θ13=0.0841±0.0027(stat)±0.0019(syst) and the effective neutrino mass-squared difference of |Δmee2|=(2.50±0.06(stat)±0.06(syst))×10-3 eV2. Analysis using the exact three-flavor probability found Δm322=(2.45±0.06(stat)±0.06(syst))×10-3 eV2 assuming the normal neutrino mass hierarchy and Δm322=(-2.56±0.06(stat)±0.06(syst))×10-3 eV2 for the inverted hierarchy.",
author = "{(Daya Bay Collaboration)} and An, {F. P.} and Balantekin, {A. B.} and Band, {H. R.} and M. Bishai and S. Blyth and D. Cao and Cao, {G. F.} and J. Cao and Cen, {W. R.} and Chan, {Y. L.} and Chang, {J. F.} and Chang, {L. C.} and Y. Chang and Chen, {H. S.} and Chen, {Q. Y.} and Chen, {S. M.} and Chen, {Y. X.} and Y. Chen and Cheng, {J. H.} and J. Cheng and Cheng, {Y. P.} and Cheng, {Z. K.} and Cherwinka, {J. J.} and Chu, {M. C.} and A. Chukanov and Cummings, {J. P.} and {De Arcos}, J. and Deng, {Z. Y.} and Ding, {X. F.} and Ding, {Y. Y.} and Diwan, {M. V.} and M. Dolgareva and J. Dove and Dwyer, {D. A.} and Edwards, {W. R.} and R. Gill and M. Gonchar and Gong, {G. H.} and H. Gong and M. Grassi and Gu, {W. Q.} and Guan, {M. Y.} and L. Guo and Guo, {X. H.} and Guo, {Y. H.} and Z. Guo and R. Han and S. Hans and M. He and Jen-Chieh Peng",
note = "Funding Information: Daya Bay is supported in part by the Ministry of Science and Technology of China; the U.S. Department of Energy; the Chinese Academy of Sciences; the Chinese Academy of Science (CAS) Center for Excellence in Particle Physics; the National Natural Science Foundation of China; the Guangdong provincial government; the Shenzhen municipal government; the China Guangdong Nuclear Power Group; Key Laboratory of Particle and Radiation Imaging (Tsinghua University); the Ministry of Education, Key Laboratory of Particle Physics and Particle Irradiation (Shandong University); the Ministry of Education, Shanghai Laboratory for Particle Physics and Cosmology; the Research Grants Council of the Hong Kong Special Administrative Region of China; the University Development Fund of the University of Hong Kong; the Ministry of Education (MOE) program for Research of Excellence at National Taiwan University, National Chiao-Tung University, and the National Science Council (NSC) fund support from Taiwan; the U.S. National Science Foundation; the Alfred P. Sloan Foundation; the Ministry of Education, Youth, and Sports of the Czech Republic; the Joint Institute of Nuclear Research in Dubna, Russia; the Russian Foundation for Basic Research (RFBR) research program; the National Commission of Scientific and Technological Research of Chile; and the Tsinghua University Initiative Scientific Research Program.",
year = "2017",
month = apr,
day = "1",
doi = "10.1103/PhysRevD.95.072006",
language = "English (US)",
volume = "95",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "7",
}