Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
文献类型：期刊论文
| 作者 | LHAASO Collaboration |
| 刊名 | Physical Review Letters
 |
| 出版日期 | 2022 |
| 卷号 | 129期号:26页码:261103 |
| ISSN号 | 00319007 |
| DOI | 10.1103/PhysRevLett.129.261103 |
| 文献子类 | Article |
| 英文摘要 | The kilometer square array (KM2A) of the large high altitude air shower observatory (LHAASO) aims at surveying the northern γ-ray sky at energies above 10 TeV with unprecedented sensitivity. γ-ray observations have long been one of the most powerful tools for dark matter searches, as, e.g., high-energy γ rays could be produced by the decays of heavy dark matter particles. In this Letter, we present the first dark matter analysis with LHAASO-KM2A, using the first 340 days of data from 1/2-KM2A and 230 days of data from 3/4-KM2A. Several regions of interest are used to search for a signal and account for the residual cosmic-ray background after γ/hadron separation. We find no excess of dark matter signals, and thus place some of the strongest γ-ray constraints on the lifetime of heavy dark matter particles with mass between 105 and 109 GeV. Our results with LHAASO are robust, and have important implications for dark matter interpretations of the diffuse astrophysical high-energy neutrino emission. © 2022 American Physical Society. |
| 电子版国际标准刊号 | 10797114 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/298997]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | LHAASO Collaboration. Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations[J]. Physical Review Letters,2022,129(26):261103. |
| APA | LHAASO Collaboration.(2022).Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations.Physical Review Letters,129(26),261103. |
| MLA | LHAASO Collaboration."Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations".Physical Review Letters 129.26(2022):261103. |
入库方式： OAI收割
来源：高能物理研究所
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