Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations

doi:10.1103/PhysRevLett.129.261103

IHEP OpenIR > 粒子天体物理中心

	Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
	LHAASO Collaboration
	2022
发表期刊	Physical Review Letters (IF:8.462[JCR-2016],7.805[5-Year])
ISSN	00319007
EISSN	10797114
卷号	129 期号:26 页码:261103
条目编号	IHEP00035486
文章类型	Article
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.
DOI	10.1103/PhysRevLett.129.261103
收录类别	ADS
语种	英语
EI主题词	Cosmic rays - Dark Matter - Galaxies - Tellurium compounds
EI分类号	657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
ADS Bibcode	2022PhRvL.129z1103C
ADS URL	https://ui.adsabs.harvard.edu/abs/2022PhRvL.129z1103C
ADS引文	https://ui.adsabs.harvard.edu/abs/2022PhRvL.129z1103C/citations
引用统计	正在获取... 被引频次：34 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/298997
专题	粒子天体物理中心
作者单位	中国科学院高能物理研究所
第一作者单位	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.