Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector
文献类型：期刊论文
| 作者 | EXO-200 Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 120期号:7页码:72701 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.120.072701 |
| 文献子类 | Article |
| 英文摘要 | Results from a search for neutrinoless double-beta decay (0 nu beta beta) of Xe-136 are presented using the first year of data taken with the upgraded EXO-200 detector. Relative to previous searches by EXO-200, the energy resolution of the detector has been improved to sigma/E = 1.23%, the electric field in the drift region has been raised by 50%, and a system to suppress radon in the volume between the cryostat and lead shielding has been implemented. In addition, analysis techniques that improve topological discrimination between 0 nu beta beta and background events have been developed. Incorporating these hardware and analysis improvements, the median 90% confidence level 0 nu beta beta half-life sensitivity after combining with the full data set acquired before the upgrade has increased twofold to 3.7 x 10(25) yr. No statistically significant evidence for 0 nu beta beta is observed, leading to a lower limit on the 0 nu beta beta half-life of 1.8 x 10(25) yr at the 90% confidence level. |
| 电子版国际标准刊号 | 1079-7114 |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000425094600001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285643]  |
| 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 | EXO-200 Collaboration. Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector[J]. PHYSICAL REVIEW LETTERS,2018,120(7):72701. |
| APA | EXO-200 Collaboration.(2018).Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector.PHYSICAL REVIEW LETTERS,120(7),72701. |
| MLA | EXO-200 Collaboration."Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector".PHYSICAL REVIEW LETTERS 120.7(2018):72701. |
入库方式： OAI收割
来源：高能物理研究所
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