Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay
文献类型：期刊论文
| 作者 | Daya Bay Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 121期号:24页码:241805 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.121.241805 |
| 文献子类 | Article |
| 英文摘要 | We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor (nu) over bar (e) inverse beta decay candidates observed over 1958 days of data collection. The installation of a flash analog-to-digital converter readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic Li-9 and He-8 background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative (nu) over bar (e) rates and energy spectra among detectors yields sin(2)2 theta(13) = 0.0856 +/- 0.0029 and Delta m(32)(2) = (2.471(-0.070)(+0.068)) x 10(-3) eV(2) assuming the normal hierarchy, and Delta m(32)(2) = -(2.575(-0.070)(+0.068)) x 10(-3) eV(2) assuming the inverted hierarchy. |
| 电子版国际标准刊号 | 1079-7114 |
| WOS关键词 | SYSTEM |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000453476900005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286942]  |
| 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. Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay[J]. PHYSICAL REVIEW LETTERS,2018,121(24):241805. |
| APA | Daya Bay Collaboration.(2018).Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay.PHYSICAL REVIEW LETTERS,121(24),241805. |
| MLA | Daya Bay Collaboration."Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay".PHYSICAL REVIEW LETTERS 121.24(2018):241805. |
入库方式： OAI收割
来源：高能物理研究所
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