中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay

文献类型:期刊论文

作者An, F. P.1; Balantekin, A. B.2; Band, H. R.3; Bishai, M.4; Blyth, S.5,6; Cao, D.7; Cao, G. F.8; Cao, J.8; Cen, W. R.8; Chan, Y. L.9
刊名CHINESE PHYSICS C
出版日期2017
卷号41页码:36
ISSN号1674-1137
关键词antineutrino flux energy spectrum reactor Daya Bay
DOI10.1088/1674-1137/41/1/013002
英文摘要A new measurement of the reactor antineutrino flux and energy spectrum by the Daya Bay reactor neutrino experiment is reported. The antineutrinos were generated by six 2.9 GW(th) nuclear reactors and detected by eight antineutrino detectors deployed in two near (560 m and 600 m flux-weighted baselines) and one far (1640 m flux-weighted baseline) underground experimental halls. With 621 days of data, more than 1.2 million inverse beta decay (IBD) candidates were detected. The IBD yield in the eight detectors was measured, and the ratio of measured to predicted flux was found to be 0.946 +/- 0.020 (0.992 +/- 0.021) for the Huber+Mueller (ILL+Vogel) model. A 2.9 sigma deviation was found in the measured IBD positron energy spectrum compared to the predictions. In particular, an excess of events in the region of 4-6 MeV was found in the measured spectrum, with a local significance of 4.4 sigma. A reactor antineutrino spectrum weighted by the IBD cross section is extracted for model-independent predictions.
WOS关键词NEUTRON FISSION-PRODUCTS ; LONG-BASE-LINE ; OSCILLATIONS ; CALIBRATION ; DETECTORS ; THETA(13) ; SEARCH ; SYSTEM ; PU-239
资助项目Ministry of Science and Technology of China ; United States Department of Energy ; Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics ; National Natural Science Foundation of China ; Guangdong provincial government ; Shenzhen municipal government ; China General Nuclear Power Group ; Research Grants Council of the Hong Kong Special Administrative Region of China ; MOST and MOE in Taiwan ; U.S. National Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Joint Institute of Nuclear Research in Dubna, Russia ; NSFC-RFBR joint research program ; National Commission for Scientific and Technological Research of Chile
WOS研究方向Physics
语种英语
出版者CHINESE PHYSICAL SOC
WOS记录号WOS:000393254200002
资助机构Ministry of Science and Technology of China ; United States Department of Energy ; Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics ; National Natural Science Foundation of China ; Guangdong provincial government ; Shenzhen municipal government ; China General Nuclear Power Group ; Research Grants Council of the Hong Kong Special Administrative Region of China ; MOST and MOE in Taiwan ; U.S. National Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Joint Institute of Nuclear Research in Dubna, Russia ; NSFC-RFBR joint research program ; National Commission for Scientific and Technological Research of Chile
源URL[http://119.78.100.186/handle/113462/44290]  
专题中国科学院近代物理研究所
通讯作者Hans, S.
作者单位1.East China Univ Sci & Technol, Inst Modern Phys, Shanghai, Peoples R China
2.Univ Wisconsin, Madison, WI 53706 USA
3.Yale Univ, Dept Phys, New Haven, CT 06520 USA
4.Brookhaven Natl Lab, Upton, NY 11973 USA
5.Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
6.Natl United Univ, Miaoli, Taiwan
7.Nanjing Univ, Nanjing, Jiangsu, Peoples R China
8.Inst High Energy Phys, Beijing, Peoples R China
9.Chinese Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China
10.Natl Chiao Tung Univ, Inst Phys, Hsinchu, Taiwan
推荐引用方式
GB/T 7714
An, F. P.,Balantekin, A. B.,Band, H. R.,et al. Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay[J]. CHINESE PHYSICS C,2017,41:36.
APA An, F. P..,Balantekin, A. B..,Band, H. R..,Bishai, M..,Blyth, S..,...&Zhang, Z. J..(2017).Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay.CHINESE PHYSICS C,41,36.
MLA An, F. P.,et al."Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay".CHINESE PHYSICS C 41(2017):36.

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来源:近代物理研究所

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