Low-Mass Dark Matter Search with the DarkSide-50 Experiment

doi:10.1103/PhysRevLett.121.081307

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	Low-Mass Dark Matter Search with the DarkSide-50 Experiment
	DarkSide Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2018
卷号	121 期号:8 页码:81307
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.121.081307
文献子类	Article
英文摘要	We present the results of a search for dark matter weakly interacting massive particles (WIMPs) in the mass range below 20 GeV/c(2) using a target of low-radioactivity argon with a 6786.0 kg d exposure. The data were obtained using the DarkSide-50 apparatus at Laboratori Nazionali del Gran Sasso. The analysis is based on the ionization signal, for which the DarkSide-50 time projection chamber is fully efficient at 0.1 keVee. The observed rate in the detector at 0.5 keVee is about 1.5 event/keVee/kg/d and is almost entirely accounted for by known background sources. We obtain a 90% C.L. exclusion limit above 1.8 GeV/c(2) for the spin-independent cross section of dark matter WIMPs on nucleons, extending the exclusion region for dark matter below previous limits in the range 1.8-6 GeV/c(2).
电子版国际标准刊号	1079-7114
WOS关键词	ARGON ; CAPTURE ; SIMULATIONS ; CONSTRAINTS ; IONIZATION ; GALAXIES ; AR-39
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000442548300001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286242]
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	DarkSide Collaboration. Low-Mass Dark Matter Search with the DarkSide-50 Experiment[J]. PHYSICAL REVIEW LETTERS,2018,121(8):81307.
APA	DarkSide Collaboration.(2018).Low-Mass Dark Matter Search with the DarkSide-50 Experiment.PHYSICAL REVIEW LETTERS,121(8),81307.
MLA	DarkSide Collaboration."Low-Mass Dark Matter Search with the DarkSide-50 Experiment".PHYSICAL REVIEW LETTERS 121.8(2018):81307.