热门
Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay
文献类型：期刊论文
| 作者 | Daya Bay Collaboration |
| 刊名 | CHINESE PHYSICS C中国物理. C
 |
| 出版日期 | 2017 |
| 卷号 | 41期号:1页码:13002 |
| 关键词 | antineutrino flux energy spectrum reactor Daya Bay |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/41/1/013002 |
| 文献子类 | Article |
| 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 |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5899528 |
| WOS记录号 | WOS:000393254200002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284298]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Daya Bay Collaboration. Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay[J]. CHINESE PHYSICS C中国物理. C,2017,41(1):13002. |
| APA | Daya Bay Collaboration.(2017).Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay.CHINESE PHYSICS C中国物理. C,41(1),13002. |
| MLA | Daya Bay Collaboration."Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay".CHINESE PHYSICS C中国物理. C 41.1(2017):13002. |
入库方式： OAI收割
来源：高能物理研究所
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。