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Improved measurement of electron antineutrino disappearance at Daya Bay 被引量：38

Improved measurement of electron antineutrino disappearance at Daya Bay
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摘要 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 GWm 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. 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 GWm 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.
作者 安丰鹏 安琪 白景芝 A.B.Balantekin H.R.Band W.Beriguete M.Bishai S.Blyth R.L.Brown 曹国富 曹俊 R.Carr W.T.Chan 常劲帆 Y.Chang C.Chasman 陈和生 H.Y.Chen 陈申见 陈少敏 陈潇聪 陈晓辉 陈晓苏 陈羽 陈义学 J.J.Cherwinka 朱明中 J.P.Cummings 邓子艳 丁雅韵 M.V.Diwan E.Draeger 杜小峰 D.Dwyer W.R.Edwards S.R.Ely 方绍东 付金煜 付在伟 葛良全 R.L.Gi11 M.Gonchar 龚光华 宫辉 Y.A.Gornushkin 顾文强 关梦云 郭新恒 R.W.Hackenburg R.L.Hahn S.Hans 郝慧峰 何苗 贺青 K.M.Heeger 衡月昆 P.Hinrichs Y.K.Hor Y.B.Hsiung B.z.Hu 胡涛 黄翰雄 H.z.Huang 黄性涛 P.Huber V.Issakov z.Isvan D.E.Jaffe S.Jetter 季筱璐 季向盼 姜海静 焦健斌 R.A.Johnson 康丽 S.H.Kettell M.Kramer 关健强 郭文伟 郭人能 C.Y.Lai 赖万昌 W.H.Lai K.Lau L.Lebanowski J.Lee 雷瑞霆 R.Leitner 梁干庄 梁嘉怡 C.A.Lewis 李飞 李高嵩 李秋菊 李卫东 李小波 李小男 李学潜 李仪 李志斌 梁昊 林政儒 C.L.Lin S.K.Lin 林延畅 凌家杰 J.M.Link L.Littenberg B.R.Littlejohn D.W.Liu 刘金昌 刘江来 刘颖彪 陆昌国 路浩奇 陆永康 K.B.Luk 马秋梅 马续波 马骁妍 马宇蒨 K.T.McDonald M.C.McFarlane R.D.McKeown Y.Meng D.Mohapatra Y.Nakajima J.Napolitano D.Naumov I.Nemchenok 倪浩然 W.K.Ngai 聂阳波 宁哲 J.P.Ochoa-Ricoux A.Olshevski S.Patton V.Pec J.C.Peng L.E.Piilonen L.Pinsky 潘振声 齐法制 祁鸣 钱鑫 N.Raper 任杰 R.Rosero B.Roskovec 阮锡超 邵贝贝 师恺 H.Steiner 孙功星 孙吉良 N.Tagg 谭耀豪 H.K.Tanaka 唐晓 H.Themann Y.Torun S.Trentalange O.Tsai K.V.Tsang R.H.M.Tsang C.E.Tull Y.C.Tung B.Viren V.Vorobe1 C.H.Wang 王灵淑 王玲玉 王龙泽 王萌 王乃彦 王瑞光 W.Wang 王玺 王贻芳 王喆 王铮 王志民 D.M.Webber 魏瀚宇 魏亚东 温良剑 K.Whisnant C.G.White L.Whitehead Y.Williamson T.Wise H.L.H.Wong E.T.Worcester F.F.Wu 吴群 习建博 夏冬梅 邢志忠 徐建一 徐晶 徐吉磊 徐晔 薛涛 杨长根 杨雷 叶梅 M.Yeh Y.S.Yeh B.L.Young 于泽源 占亮 C.Zhang 章飞虹 张家文 张清民 张书华 张一纯 张银鸿 张一心 张志坚 张子平 张智勇 赵洁 赵庆旺 赵豫斌 郑磊 钟玮丽 周莉 周祖英 庄红林 邹佳恒
机构地区 Institute of High Energy Physics University of Science and Technology of China University of Wisconsin Brookhaven National Laboratory National United University California Institute of Technology Nanjing University Department of Engineering Physics Chinese University of Hong Kong Shenzhen Univeristy North China Electric Power University Siena College Department of Physics Lawrence Berkeley National Laboratory Department of Physics Department of Physics Chengdu University of Technology Joint Institute for Nuclear Research Shanghai Jiao Tong University Beijing Normal University Joseph Henry Laboratories Center for Neutrino Physics Department of Physics Institute of Physics China Institute of Atomic Energy University of California Shandong University School of Physics University of Cincinnati Dongguan University of Technology Department of Physics Department of Physics Charles University Sun Yat-Sen(Zhongshan)University College of William and Mary Rensselaer Polytechnic Institute China Guangdong Nuclear Power Group Iowa State University Xi'an Jiaotong University
出处 《Chinese Physics C》 SCIE CAS CSCD 2013年第1期1-20,共20页 中国物理C（英文版）
基金 Supported 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 NTU, NCTU NSC fund support from Taipei 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 the Joint Institute of Nuclear Research in Dubna,Russia
关键词 neutrino oscillation neutrino mixing REACTOR Daya Bay neutrino oscillation, neutrino mixing, reactor, Daya Bay
分类号 O572.321 [理学—粒子物理与原子核物理] TL91 [核科学技术—核技术及应用]
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同被引文献185

引证文献38

二级引证文献19

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