@article{6317092f2c19475288f53dc9cfd54f50,
title = "Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay",
abstract = "We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor νe inverse β decay candidates observed over 1958 days of data collection. The installation of a flash analog-to-digital converter readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic Li9 and He8 background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative νe rates and energy spectra among detectors yields sin22θ13=0.0856±0.0029 and Δm322=(2.471-0.070+0.068)×10-3 eV2 assuming the normal hierarchy, and Δm322=-(2.575-0.070+0.068)×10-3 eV2 assuming the inverted hierarchy.",
author = "{(The Daya Bay Collaboration)} and D. Adey 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 Chan, {Y. L.} and Chang, {J. F.} and Y. Chang and Chen, {H. S.} and Chen, {S. M.} and Y. Chen and Chen, {Y. X.} and J. Cheng and Cheng, {Z. K.} and Cherwinka, {J. J.} and Chu, {M. C.} and A. Chukanov and Cummings, {J. P.} and Deng, {F. S.} and Ding, {Y. Y.} and Diwan, {M. V.} and M. Dolgareva and Dwyer, {D. A.} and Edwards, {W. R.} and M. Gonchar and Gong, {G. H.} and H. Gong and Gu, {W. Q.} and L. Guo and Guo, {X. H.} and Guo, {Y. H.} and Z. Guo and Hackenburg, {R. W.} and S. Hans and M. He and Heeger, {K. M.} and Heng, {Y. K.} and A. Higuera and Hsiung, {Y. B.} and Hu, {B. Z.} and Hu, {J. R.} and T. Hu and Hu, {Z. J.} and Huang, {X. T.} and Huang, {Y. B.} 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 CAS Center for Excellence in Particle Physics, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China General 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 MOE program for Research of Excellence at National Taiwan University, National Chiao-Tung University, and 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 Charles University Research Centre UNCE, the Joint Institute of Nuclear Research in Dubna, Russia, the CNFC-RFBR joint research program, the National Commission of Scientific and Technological Research of Chile, and the Tsinghua University Initiative Scientific Research Program. We acknowledge Yellow River Engineering Consulting Co., Ltd., and China Railway 15th Bureau Group Co., Ltd., for building the underground laboratory. We are grateful for the ongoing cooperation from the China General Nuclear Power Group and China Light and Power Company. ",
year = "2018",
month = dec,
day = "14",
doi = "10.1103/PhysRevLett.121.241805",
language = "English (US)",
volume = "121",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "24",
}