Abstract
We report an improved measurement of the neutrino mixing angle θ13 from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin22θ13 with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW th were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944±0.007(stat.)±0.003(syst.). An analysis of the relative rates in six detectors finds sin22θ13=0. 089±0.010(stat.)±0.005(syst.) in a three-neutrino framework.
Original language | English (US) |
---|---|
Article number | 011001 |
Journal | Chinese Physics C |
Volume | 37 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2013 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Instrumentation
- Astronomy and Astrophysics
Keywords
- Daya Bay
- neutrino mixing
- neutrino oscillation
- reactor
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In: Chinese Physics C, Vol. 37, No. 1, 011001, 01.2013.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Improved measurement of electron antineutrino disappearance at Daya Bay
AU - An, F. P.
AU - An, Q.
AU - Bai, J. Z.
AU - Balantekin, A. B.
AU - Band, H. R.
AU - Beriguete, W.
AU - Bishai, M.
AU - Blyth, S.
AU - Brown, R. L.
AU - Cao, G. F.
AU - Cao, J.
AU - Carr, R.
AU - Chan, W. T.
AU - Chang, J. F.
AU - Chang, Y.
AU - Chasman, C.
AU - Chen, H. S.
AU - Chen, H. Y.
AU - Chen, S. J.
AU - Chen, S. M.
AU - Chen, X. C.
AU - Chen, X. H.
AU - Chen, X. S.
AU - Chen, Y.
AU - Chen, Y. X.
AU - Cherwinka, J. J.
AU - Chu, M. C.
AU - Cummings, J. P.
AU - Deng, Z. Y.
AU - Ding, Y. Y.
AU - Diwan, M. V.
AU - Draeger, E.
AU - Du, X. F.
AU - Dwyer, D.
AU - Edwards, W. R.
AU - Ely, S. R.
AU - Fang, S. D.
AU - Fu, J. Y.
AU - Fu, Z. W.
AU - Ge, L. Q.
AU - Gill, R. L.
AU - Gonchar, M.
AU - Gong, G. H.
AU - Gong, H.
AU - Gornushkin, Y. A.
AU - Gu, W. Q.
AU - Guan, M. Y.
AU - Guo, X. H.
AU - Hackenburg, R. W.
AU - Hahn, R. L.
AU - Hans, S.
AU - Hao, H. F.
AU - He, M.
AU - He, Q.
AU - Heeger, K. M.
AU - Heng, Y. K.
AU - Hinrichs, P.
AU - Hor, Y. K.
AU - Hsiung, Y. B.
AU - Hu, B. Z.
AU - Hu, T.
AU - Huang, H. X.
AU - Huang, H. Z.
AU - Huang, X. T.
AU - Huber, P.
AU - Issakov, V.
AU - Isvan, Z.
AU - Jaffe, D. E.
AU - Jetter, S.
AU - Ji, X. L.
AU - Ji, X. P.
AU - Jiang, H. J.
AU - Jiao, J. B.
AU - Johnson, R. A.
AU - Kang, L.
AU - Kettell, S. H.
AU - Kramer, M.
AU - Kwan, K. K.
AU - Kwok, M. W.
AU - Kwok, T.
AU - Lai, C. Y.
AU - Lai, W. C.
AU - Lai, W. H.
AU - Lau, K.
AU - Lebanowski, L.
AU - Lee, J.
AU - Lei, R. T.
AU - Leitner, R.
AU - Leung, J. K.C.
AU - Leung, K. Y.
AU - Lewis, C. A.
AU - Li, F.
AU - Li, G. S.
AU - Li, Q. J.
AU - Li, W. D.
AU - Li, X. B.
AU - Li, X. N.
AU - Li, X. Q.
AU - Li, Y.
AU - Li, Z. B.
AU - Liang, H.
AU - Lin, C. J.
AU - Lin, G. L.
AU - Lin, S. K.
AU - Lin, Y. C.
AU - Ling, J. J.
AU - Link, J. M.
AU - Littenberg, L.
AU - Littlejohn, B. R.
AU - Liu, D. W.
AU - Liu, J. C.
AU - Liu, J. L.
AU - Liu, Y. B.
AU - Lu, C.
AU - Lu, H. Q.
AU - Luk, A.
AU - Luk, K. B.
AU - Ma, Q. M.
AU - Ma, X. B.
AU - Ma, X. Y.
AU - Ma, Y. Q.
AU - McDonald, K. T.
AU - McFarlane, M. C.
AU - McKeown, R. D.
AU - Meng, Y.
AU - Mohapatra, D.
AU - Nakajima, Y.
AU - Napolitano, J.
AU - Naumov, D.
AU - Nemchenok, I.
AU - Ngai, H. Y.
AU - Ngai, W. K.
AU - Nie, Y. B.
AU - Ning, Z.
AU - Ochoa-Ricoux, J. P.
AU - Olshevski, A.
AU - Patton, S.
AU - Pec, V.
AU - Peng, J. C.
AU - Piilonen, L. E.
AU - Pinsky, L.
AU - Pun, C. S.J.
AU - Qi, F. Z.
AU - Qi, M.
AU - Qian, X.
AU - Raper, N.
AU - Ren, J.
AU - Rosero, R.
AU - Roskovec, B.
AU - Ruan, X. C.
AU - Shao, B. B.
AU - Shih, K.
AU - Steiner, H.
AU - Sun, G. X.
AU - Sun, J. L.
AU - Tagg, N.
AU - Tam, Y. H.
AU - Tanaka, H. K.
AU - Tang, X.
AU - Themann, H.
AU - Torun, Y.
AU - Trentalange, S.
AU - Tsai, O.
AU - Tsang, K. V.
AU - Tsang, R. H.M.
AU - Tull, C. E.
AU - Tung, Y. C.
AU - Viren, B.
AU - Vorobel, V.
AU - Wang, C. H.
AU - Wang, L. S.
AU - Wang, L. Y.
AU - Wang, L. Z.
AU - Wang, M.
AU - Wang, N. Y.
AU - Wang, R. G.
AU - Wang, W.
AU - Wang, X.
AU - Wang, Y. F.
AU - Wang, Z.
AU - Wang, Z.
AU - Wang, Z. M.
AU - Webber, D. M.
AU - Wei, H. Y.
AU - Wei, Y. D.
AU - Wen, L. J.
AU - Whisnant, K.
AU - White, C. G.
AU - Whitehead, L.
AU - Williamson, Y.
AU - Wise, T.
AU - Wong, H. L.H.
AU - Worcester, E. T.
AU - Wu, F. F.
AU - Wu, Q.
AU - Xi, J. B.
AU - Xia, D. M.
AU - Xing, Z. Z.
AU - Xu, J.
AU - Xu, J.
AU - Xu, J. L.
AU - Xu, Y.
AU - Xue, T.
AU - Yang, C. G.
AU - Yang, L.
AU - Ye, M.
AU - Yeh, M.
AU - Yeh, Y. S.
AU - Young, B. L.
AU - Yu, Z. Y.
AU - Zhan, L.
AU - Zhang, C.
AU - Zhang, F. H.
AU - Zhang, J. W.
AU - Zhang, Q. M.
AU - Zhang, S. H.
AU - Zhang, Y. C.
AU - Zhang, Y. H.
AU - Zhang, Y. X.
AU - Zhang, Z. J.
AU - Zhang, Z. P.
AU - Zhang, Z. Y.
AU - Zhao, J.
AU - Zhao, Q. W.
AU - Zhao, Y. B.
AU - Zheng, L.
AU - Zhong, W. L.
AU - Zhou, L.
AU - Zhou, Z. Y.
AU - Zhuang, H. L.
AU - Zou, J. H.
N1 - Funding Information: The Daya Bay experiment is supported in part by the Ministry of Science and Technology of China, the United States Department of Energy, the Chinese Academy of Sciences, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China Guangdong Nuclear Power Group, Shanghai Laboratory for Particle Physics and Cosmology, the Research Grants Council of the Hong Kong Special Administrative Region of China, 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 Czech Science Foundation, and the Joint Institute of Nuclear Research in Dubna, Russia. We thank 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 Guangdong Nuclear Power Group and China Light & Power Company.
PY - 2013/1
Y1 - 2013/1
N2 - We report an improved measurement of the neutrino mixing angle θ13 from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin22θ13 with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW th were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944±0.007(stat.)±0.003(syst.). An analysis of the relative rates in six detectors finds sin22θ13=0. 089±0.010(stat.)±0.005(syst.) in a three-neutrino framework.
AB - We report an improved measurement of the neutrino mixing angle θ13 from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for sin22θ13 with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW th were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is 0.944±0.007(stat.)±0.003(syst.). An analysis of the relative rates in six detectors finds sin22θ13=0. 089±0.010(stat.)±0.005(syst.) in a three-neutrino framework.
KW - Daya Bay
KW - neutrino mixing
KW - neutrino oscillation
KW - reactor
UR - http://www.scopus.com/inward/record.url?scp=84871578748&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871578748&partnerID=8YFLogxK
U2 - 10.1088/1674-1137/37/1/011001
DO - 10.1088/1674-1137/37/1/011001
M3 - Article
AN - SCOPUS:84871578748
SN - 1674-1137
VL - 37
JO - Chinese Physics C
JF - Chinese Physics C
IS - 1
M1 - 011001
ER -