New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay

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Title:	New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay
Authors:	彭仁傑;An, F. P.;Balantekin, A. B.;Bishai, M.;Blyth, S.;Cao, J.;Chang, J. F.;Chang, Y.;Chen, H. S.;Chen, Y. X.;Chen, Y.;Cheng, J.;Cherwinka, J. J.;Cummings, J. P.;Ding, Y. Y.;Diwan, M. V.;Dwyer, D. A.;Ely, S. R.;Guan, M. Y.;Guo, L.;Guo, X. H.;Han, R.;Heng, Y. K.;Higuera, A.;Hu, B. Z.;Hu, L. M.;Hu, T.;Hu, W.;Huang, X. T.;Hussain, G.;Jaffke, P.;Jen, K. L.;Jetter, S.;Ji, X. L.;Jiao, J. B.;Johnson, R. A.;Kwok, T.;Leitner, R.;Leung, J. K. C.;Li, F.;Li, G. S.;Li, S. C.;Lin, C. J.;Lin, P. Y.;Lin, S. K.;Link, J. M.;Littenberg, L.;Littlejohn, B. R.;Liu, D. W.;Liu, J. C.;Luk, K. B.;Ma, X. Y.;Martinez Caicedo, D. A.;McKeown, R. D.;Monari Kebwaro, J.;Nakajima, Y.;Naumova, E.;Ngai, H. Y.;Ochoa-Ricoux, J. P.;Patton, S.;Pec, V.;Peng, J. C.;Piilonen, L. E.;Ren, B.;Ren, J.;Rosero, R.;Roskovec, B.;Steiner, H.;Tull, C. E.;Viren, B.;Wang, C. H.;Wang, N. Y.;Wang, W.;Wang, W. W.;Wang, X.;Wang, Z.;Whisnant, K.;Wise, T.;Worcester, E.;Wu, Q.;Xia, J. K.;Xia, X.;Xu, J. Y.;Xu, J.;Xue, T.;Yan, J.;Yang, L.;Yang, M. S.;Yang, M. T.;Yeh, Y. S.;Zang, S. L.;Zhang, J. W.;Zhang, Q. M.;Zhang, Z. Y.;Zhao, J.;Zhao, Q. W.;Zhao, Y. B.;Zheng, L.;Zhong, W. L.;Zhou, L.;Zhou, N.
Contributors:	高能與強場物理研究中心
Keywords:	Antineutrinos;Calibration;Daya Bay;Detectors;Emission;Halls;Mathematical models;neutrino mixing;Neutrino oscillation;Oscillations;reactor;Reactors
Date:	2015-09-11
Issue Date:	2026-04-23 12:05:58 (UTC+8)
Publisher:	American Physical Society;United States: American Physical Society (APS)
Abstract:	摘要： We report a new measurement of electron antineutrino disappearance using the fully constructed Daya Bay Reactor Neutrino Experiment. The final two of eight antineutrino detectors were installed in the summer of 2012. Including the 404 days of data collected from October 2012 to November 2013 resulted in a total exposure of 6.9×10^{5} GW_{th} ton days, a 3.6 times increase over our previous results. Improvements in energy calibration limited variations between detectors to 0.2%. Removal of six ^{241}Am-^{13}C radioactive calibration sources reduced the background by a factor of 2 for the detectors in the experimental hall furthest from the reactors. Direct prediction of the antineutrino signal in the far detectors based on the measurements in the near detectors explicitly minimized the dependence of the measurement on models of reactor antineutrino emission. The uncertainties in our estimates of sin^{2}2θ_{13} and \|Δm_{ee}^{2}\| were halved as a result of these improvements. An analysis of the relative antineutrino rates and energy spectra between detectors gave sin^{2}2θ_{13}=0.084±0.005 and \|Δm_{ee}^{2}\|=(2.42±0.11)×10^{-3} eV^{2} in the three-neutrino framework. 其他題名： Phys Rev Lett 出版者： United States: American Physical Society (APS) 出版日期： 2015-09-11 出處： Physical Review Letters, 2015-09, Vol.115 (11), p.111802, Article 111802 資源來源： American Physical Society Journals 識別號： ISSN: 0031-9007 識別號： ISSN: 1079-7114 識別號： ISSN: 1092-0145 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.115.111802 識別號： PMID: 26406819
Appears in Collections:	[Center for High Energy and High Field Physics (CHiP)] journal & Dissertation

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