Improved measurement of electron antineutrino disappearance at Daya Bay
Fengpeng An, Q. An(University of Science and Technology of China), J. Z. Bai(Institute of High Energy Physics), A. B. Balantekin(University of Wisconsin–Madison), H. R. Band(University of Wisconsin–Madison), W. Beriguete(Brookhaven National Laboratory), M. Bishai(Brookhaven National Laboratory), S. Blyth(National United University), Richard Brown(Brookhaven National Laboratory), G. F. Cao(Institute of High Energy Physics), Jun Cao(Xi'an Jiaotong University), R. Carr(California Institute of Technology), W. T. Chan(Brookhaven National Laboratory), J. F. Chang(Institute of High Energy Physics), Y. Chang(National United University), C. Chasman(Brookhaven National Laboratory), H. S. Chen(Institute of High Energy Physics), H. Y. Chen(National Yang Ming Chiao Tung University), S. J. Chen(Nanjing University), Shaomin Chen(Tsinghua University), X. C. Chen(Chinese University of Hong Kong), X. H. Chen(Xi'an Jiaotong University), X. S. Chen(Institute of High Energy Physics), Y. Chen(Shenzhen University), Y. X. Chen(North China Electric Power University), J. J. Cherwinka(University of Wisconsin–Madison), M. C. Chu(Chinese University of Hong Kong), J. P. Cummings(Siena College), Z. Y. Deng(Institute of High Energy Physics), Yayun Ding(Institute of High Energy Physics), M. Diwan(Brookhaven National Laboratory), Emily Draeger(Illinois Institute of Technology), X. F. Du(Institute of High Energy Physics), D. A. Dwyer(California Institute of Technology), W. R. Edwards(Lawrence Berkeley National Laboratory), S. Ely(University of Illinois Urbana-Champaign), S. D. Fang(Nanjing University), Jinghua Fu(Nanjing University), Z. Fu(Nanjing University), L. Q. Ge(Chengdu University of Technology), R. L. Gill(Brookhaven National Laboratory), M. Gonchar(Joint Institute for Nuclear Research), G. Gong(Tsinghua University), Haipeng Gong(Tsinghua University), Y. Gornushkin(Joint Institute for Nuclear Research), W. Gu(Shanghai Jiao Tong University), Mengyun Guan(Institute of High Energy Physics), Xin-Heng Guo(Beijing Normal University), R. Hackenburg(Brookhaven National Laboratory), R. L. Hahn(Brookhaven National Laboratory), S. Hans(Brookhaven National Laboratory), Hantao Hao(University of Science and Technology of China), M. He(Institute of High Energy Physics), Q. He(Princeton University), K. M. Heeger(University of Wisconsin–Madison), Y. K. Heng(Institute of High Energy Physics), P. Hinrichs(University of Wisconsin–Madison), Y. K. Hor(Virginia Tech), Y. Hsiung(National Taiwan University), Beibei Hu(National Yang Ming Chiao Tung University), T. Hu(Institute of High Energy Physics), Han‐Xiong Huang(University of California, Los Angeles), H. Z. Huang(University of California, Los Angeles), X. T. Huang(Shandong University), Patrick Huber(Virginia Tech), Вадим Іссаков(Brookhaven National Laboratory), Z. Isvan(Brookhaven National Laboratory), D. E. Jaffe(Brookhaven National Laboratory), S. Jetter(Institute of High Energy Physics), X. L. Ji(Nankai University), Xiangpan Ji(Nankai University), H. J. Jiang(Chengdu University of Technology), J. B. Jiao(Shandong University), R. A. Johnson(University of Cincinnati), Li-Wei Kang(Dongguan University of Technology), S. H. Kettell(Brookhaven National Laboratory), M. Krämer(Lawrence Berkeley National Laboratory), K. K. Kwan(Chinese University of Hong Kong), M. W. Kwok(Chinese University of Hong Kong), T. Kwok(University of Hong Kong), Canxiong Lai(National Taiwan University), Wanchang Lai(Chengdu University of Technology), W. H. Lai(National Yang Ming Chiao Tung University), K. Lau(University of Houston), L. Lebanowski(University of Houston), J. Lee(Lawrence Berkeley National Laboratory), R. T. Lei(Sun Yat-sen University), R. Leitner(Charles University), J. K. C. Leung(University of Hong Kong), Kwong-Sak Leung(University of Hong Kong), C. A. Lewis(University of Wisconsin–Madison), F. Li(Xi'an Jiaotong University), G. S. Li(Shanghai Jiao Tong University), Q. J. Li(Xi'an Jiaotong University), W. D. Li(Xi'an Jiaotong University), X. B. Li(Xi'an Jiaotong University), X. N. Li(Nankai University), X. Q. Li(Nankai University), Y. Li(Xi'an Jiaotong University), Z. B. Li(Sun Yat-sen University), H. Liang(University of Science and Technology of China), C.-J. Lin(Lawrence Berkeley National Laboratory), Guey-Lin Lin(National Yang Ming Chiao Tung University), S. Lin(University of Houston), Y. C. Lin(Chinese University of Hong Kong), J. J. Ling(Brookhaven National Laboratory), J. M. Link(Virginia Tech), L. Littenberg(Brookhaven National Laboratory), B. R. Littlejohn(University of Wisconsin–Madison), D. W. Liu(University of Illinois Urbana-Champaign), J. C. Liu(Xi'an Jiaotong University), J. L. Liu(Shanghai Jiao Tong University), Y. B. Liu(Xi'an Jiaotong University), C. Lü(Princeton University), H. Q. Lu(Xi'an Jiaotong University), A. Luk(Chinese University of Hong Kong), X.-G. Lu(Lawrence Berkeley National Laboratory), Q.M. Ma(Xi'an Jiaotong University), X. B.(North China Electric Power University), X. Y.(Xi'an Jiaotong University), Y. Q.(Xi'an Jiaotong University), Kirk T. McDonald(Princeton University), M. C. McFarlane(University of Wisconsin–Madison), R. D. McKeown(California Institute of Technology), Yue Meng(Virginia Tech), D. Mohapatra(Virginia Tech), Y. Nakajima(Lawrence Berkeley National Laboratory), J. Napolitano(Rensselaer Polytechnic Institute), D. Naumov(Joint Institute for Nuclear Research), I. Nemchenok(Joint Institute for Nuclear Research), H. Y. Ngai(University of Hong Kong), W. K. Ngai(University of Illinois Urbana-Champaign), Y. Nie(China Institute of Atomic Energy), Zhe Ning(Xi'an Jiaotong University), J. P. Ochoa‐Ricoux(Lawrence Berkeley National Laboratory), A.G. Olshevski(Joint Institute for Nuclear Research), S. Patton(Lawrence Berkeley National Laboratory), V. Pec(Charles University), J. C. Peng(University of Illinois Urbana-Champaign), L. E. Piilonen(Virginia Tech), L. Pinsky(University of Houston), C. S. J. Pun(University of Hong Kong), F. Z. Qi(Xi'an Jiaotong University), M. Qi(Nanjing University), X. Qian(California Institute of Technology), N. Raper(Rensselaer Polytechnic Institute), Jie Ren(Xi'an Jiaotong University), R. Rosero(Brookhaven National Laboratory), B. Roskovec(Charles University), Xichao Ruan(Xi'an Jiaotong University), B. Shao(Tsinghua University), Kendrick Co Shih(Chinese University of Hong Kong), H. Steiner(Lawrence Berkeley National Laboratory), G. X. Sun(China General Nuclear Power Corporation (China)), Jian Sun(China General Nuclear Power Corporation (China)), N. Tagg(Brookhaven National Laboratory), Y. H. Tam(Chinese University of Hong Kong), Hiroyuki Tanaka(Brookhaven National Laboratory), X. Tang(Xi'an Jiaotong University), H. Themann(Brookhaven National Laboratory), Y. Torun(Illinois Institute of Technology), S. Trentalange(University of California, Los Angeles), O. D. Tsai(University of California, Los Angeles), K. V. Tsang(Lawrence Berkeley National Laboratory), R. Tsang(California Institute of Technology), C. E. Tull(Lawrence Berkeley National Laboratory), Y. C. Tung(National Taiwan University), B. Viren(Brookhaven National Laboratory), V. Vorobel(Charles University), C. Wang(National United University), L. S. Wang(Xi'an Jiaotong University), L. Y. Wang(Xi'an Jiaotong University), L. Z. Wang(North China Electric Power University), Meng Wang(Shandong University), N. Y. Wang(Beijing Normal University), R. G. Wang(Xi'an Jiaotong University), Xiang-Gao Wang(William & Mary), Xiaogang Wang(Tsinghua University), Y. F. Wang(Xi'an Jiaotong University), Zhiyuan Wang(Tsinghua University), Z. Wang(Xi'an Jiaotong University), Z. M. Wang(Xi'an Jiaotong University), D. M. Webber(University of Wisconsin–Madison), H. Wei(Tsinghua University), Y. D. Wei(Xi'an Jiaotong University), Liangjian Wen(Xi'an Jiaotong University), K. Whisnant(Iowa State University), C. G. White(Illinois Institute of Technology), L. Whitehead(University of Houston), Y. Williamson(Brookhaven National Laboratory), T. Wise(University of Wisconsin–Madison), H. L. H. Wong(Lawrence Berkeley National Laboratory), E. Worcester(Brookhaven National Laboratory), Fenfang Wu(California Institute of Technology), Qian Wu(Shandong University), Jianqi Xi(University of Science and Technology of China), D. M. Xia(Xi'an Jiaotong University), Zezhou Xing(Xi'an Jiaotong University), Jilei Xu(Xi'an Jiaotong University), Jilei Xu(Xi'an Jiaotong University), Jilei Xu(Xi'an Jiaotong University), Y. Xu(Nankai University), Tianrui Xue(Tsinghua University), C. G. Yang(Xi'an Jiaotong University), L. Yang(Xi'an Jiaotong University), M. Ye(Brookhaven National Laboratory), M. Yeh(Brookhaven National Laboratory), Y. S. Yeh(National Yang Ming Chiao Tung University), B. L. Young(Iowa State University), Zeyuan Yu(Xi'an Jiaotong University), Liang Zhan(Xi'an Jiaotong University), C. Zhang(Brookhaven National Laboratory), Qingmin Zhang(Xi'an Jiaotong University), J. W. Zhang(Xi'an Jiaotong University), Qingmin Zhang(Xi'an Jiaotong University), S. H. Zhang(Xi'an Jiaotong University), Y. C. Zhang(University of Science and Technology of China), Y. H. Zhang(Xi'an Jiaotong University), Yichi Zhang(Xi'an Jiaotong University), Zilong Zhang(Xi'an Jiaotong University), Z. P. Zhang(University of Science and Technology of China), Z. Y. Zhang(Xi'an Jiaotong University), J. Zhao(Xi'an Jiaotong University), Q. W. Zhao(Xi'an Jiaotong University), Y. B. Zhao(Xi'an Jiaotong University), L. Zheng(University of Science and Technology of China), W. Zhong(Xi'an Jiaotong University), L. Zhou(Xi'an Jiaotong University), Z. Y. Zhou(Xi'an Jiaotong University), H. L. Zhuang(Xi'an Jiaotong University), J. H. Zou(Xi'an Jiaotong University)
Cited by 346Open Access
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 GWthwere 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. © 2013 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
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