Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment
Creators: name: Daya Bay Collaboration
name: An, F. P.
name: Balantekin, A. B.
name: Band, H. R.
name: Bishai, M.
name: Blyth, S.
name: Cao, D.
name: Cao, G. F.
name: Cao, J.
name: Cen, W. R.
name: Chan, Y. L.
name: Chang, J. F.
name: Chang, L. C.
name: Chang, Y.
name: Chen, H. S.
name: Chen, Q. Y.
name: Chen, S. M.
name: Chen, Y. X.
name: Chen, Y.
name: Cheng, J. -H.
name: Cheng, J.
name: Cheng, Y. P.
name: Cheng, Z. K.
name: Cherwinka, J. J.
name: Chu, M. C.
name: Chukanov, A.
name: Cummings, J. P.
name: de Arcos, J.
name: Deng, Z. Y.
name: Ding, X. F.
name: Ding, Y. Y.
name: Diwan, M. V.
name: Dolgareva, M.
name: Dove, J.
name: Dwyer, D. A.
name: Edwards, W. R.
name: Gill, R.
name: Gonchar, M.
name: Gong, G. H.
name: Gong, H.
name: Grassi, M.
name: Gu, W. Q.
name: Guan, M. Y.
name: Guo, L.
name: Guo, X. H.
name: Guo, Z.
name: Hackenburg, R. W.
name: Han, R.
name: Hans, S.
name: He, M.
name: Heeger, K. M.
name: Heng, Y. K.
name: Higuera, A.
name: Hor, Y. K.
name: Hsiung, Y. B.
name: Hu, B. Z.
name: Hu, T.
name: Hu, W.
name: Huang, E. C.
name: Huang, H. X.
name: Huang, X. T.
name: Huber, P.
name: Huo, W.
name: Hussain, G.
name: Jaffe, D. E.
name: Jaffke, P.
name: Jen, K. L.
name: Jetter, S.
name: Ji, X. P.
name: Ji, X. L.
name: Jiao, J. B.
name: Johnson, R. A.
name: Jones, D.
name: Joshi, J.
name: Kang, L.
name: Kettell, S. H.
name: Kohn, S.
name: Kramer, M.
name: Kwan, K. K.
name: Kwok, M. W.
name: Kwok, T.
name: Langford, T. J.
name: Lau, K.
name: Lebanowski, L.
name: Lee, J.
name: Lee, J. H. C.
name: Lei, R. T.
name: Leitner, R.
name: Leung, J. K. C.
name: Li, C.
name: Li, D. J.
name: Li, F.
name: Li, G. S.
name: Li, Q. J.
name: Li, S.
name: Li, S. C.
name: Li, W. D.
name: Li, X. N.
name: Li, Y. F.
name: Li, Z. B.
name: Liang, H.
name: Lin, C. J.
name: Lin, G. L.
name: Lin, S.
name: Lin, S. K.
name: Lin, Y. -C.
name: Ling, J. J.
name: Link, J. M.
name: Littenberg, L.
name: Littlejohn, B. R.
name: Liu, D. W.
name: Liu, J. L.
name: Liu, J. C.
name: Loh, C. W.
name: Lu, C.
name: Lu, H. Q.
name: Lu, J. S.
name: Luk, K. B.
name: Lv, Z.
name: Ma, Q. M.
name: Ma, X. Y.
name: Ma, X. B.
name: Ma, Y. Q.
name: Malyshkin, Y.
name: Caicedo, D. A. Martinez
name: McDonald, K. T.
name: McKeown, R. D.
name: Mitchell, I.
name: Mooney, M.
name: Nakajima, Y.
name: Napolitano, J.
name: Naumov, D.
name: Naumova, E.
name: Ngai, H. Y.
name: Ning, Z.
name: Ochoa-Ricoux, J. P.
name: Olshevskiy, A.
name: Pan, H. -R.
name: Park, J.
name: Patton, S.
name: Pec, V.
name: Peng, J. C.
name: Pinsky, L.
name: Pun, C. S. J.
name: Qi, F. Z.
name: Qi, M.
name: Qian, X.
name: Raper, N.
name: Ren, J.
name: Rosero, R.
name: Roskovec, B.
name: Ruan, X. C.
name: Steiner, H.
name: Sun, G. X.
name: Sun, J. L.
name: Tang, W.
name: Taychenachev, D.
name: Treskov, K.
name: Tsang, K. V.
name: Tull, C. E.
name: Viaux, N.
name: Viren, B.
name: Vorobel, V.
name: Wang, C. H.
name: Wang, M.
name: Wang, N. Y.
name: Wang, R. G.
name: Wang, W.
name: Wang, X.
name: Wang, Y. F.
name: Wang, Z.
name: Wang, Z.
name: Wang, Z. M.
name: Wei, H. Y.
name: Wen, L. J.
name: Whisnant, K.
name: White, C. G.
name: Whitehead, L.
name: Wise, T.
name: Wong, H. L. H.
name: Wong, S. C. F.
name: Worcester, E.
name: Wu, C. -H.
name: Wu, Q.
name: Wu, W. J.
name: Xia, D. M.
name: Xia, J. K.
name: Xing, Z. Z.
name: Xu, J. Y.
name: Xu, J. L.
name: Xu, Y.
name: Xue, T.
name: Yang, C. G.
name: Yang, H.
name: Yang, L.
name: Yang, M. S.
name: Yang, M. T.
name: Ye, M.
name: Ye, Z.
name: Yeh, M.
name: Young, B. L.
name: Yu, Z. Y.
name: Zeng, S.
name: Zhan, L.
name: Zhang, C.
name: Zhang, H. H.
name: Zhang, J. W.
name: Zhang, Q. M.
name: Zhang, X. T.
name: Zhang, Y. M.
name: Zhang, Y. X.
name: Zhang, Y. M.
name: Zhang, Z. J.
name: Zhang, Z. Y.
name: Zhang, Z. P.
name: Zhao, J.
name: Zhao, Q. W.
name: Zhao, Y. B.
name: Zhong, W. L.
name: Zhou, L.
name: Zhou, N.
name: Zhuang, H. L.
name: Zou, J. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A measurement of electron antineutrino oscillation by the Daya Bay Reactor Neutrino Experiment is described in detail. Six 2.9-GW$_{\rm th}$ nuclear power reactors of the Daya Bay and Ling Ao nuclear power facilities served as intense sources of $\overlineν_{e}$'s. Comparison of the $\overlineν_{e}$ rate and energy spectrum measured by antineutrino detectors far from the nuclear reactors ($\sim$1500-1950 m) relative to detectors near the reactors ($\sim$350-600 m) allowed a precise measurement of $\overlineν_{e}$ disappearance. More than 2.5 million $\overlineν_{e}$ inverse beta decay interactions were observed, based on the combination of 217 days of operation of six antineutrino detectors (Dec. 2011--Jul. 2012) with a subsequent 1013 days using the complete configuration of eight detectors (Oct. 2012--Jul. 2015). The $\overlineν_{e}$ rate observed at the far detectors relative to the near detectors showed a significant deficit, $R=0.949 \pm 0.002(\mathrm{stat.}) \pm 0.002(\mathrm{syst.})$. The energy dependence of $\overlineν_{e}$ disappearance showed the distinct variation predicted by neutrino oscillation. Analysis using an approximation for the three-flavor oscillation probability yielded the flavor-mixing angle $\sin^22θ_{13}=0.0841 \pm 0.0027(\mathrm{stat.}) \pm 0.0019(\mathrm{syst.})$ and the effective neutrino mass-squared difference of $\left|Δm^2_{\mathrm{ee}}\right|=(2.50 \pm 0.06(\mathrm{stat.}) \pm 0.06(\mathrm{syst.})) \times 10^{-3}\ {\rm eV}^2$. Analysis using the exact three-flavor probability found $Δm^2_{32}=(2.45 \pm 0.06(\mathrm{stat.}) \pm 0.06(\mathrm{syst.})) \times 10^{-3}\ {\rm eV}^2$ assuming the normal neutrino mass hierarchy and $Δm^2_{32}=(-2.56 \pm 0.06(\mathrm{stat.}) \pm 0.06(\mathrm{syst.})) \times 10^{-3}\ {\rm eV}^2$ for the inverted hierarchy.
description: 44 pages, 44 figures