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 |
DOI | 10.1088/1674-1137/41/1/013002 |
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. |
入库方式: OAI收割
来源:近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。