DarkSide-50 532-day dark matter search with low-radioactivity argon

DarkSide-50 532-day dark matter search with low-radioactivity argon
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DOI:
10.1103/physrevd.98.102006
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发表时间:
2018-11-16
期刊:
影响因子:
5
通讯作者:
Zuzel, G.
Zuzel, G.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Agnes, P.;Albuquerque, I. F. M.;Zuzel, G.

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Darkside-50直接探测暗物质实验是在实验室运行的双相Ar时间投影室。本文报道了用从地下提取的低放射性Ar靶进行(16660+/-270)kg d照射的盲法分析。我们在暗物质选择框中没有发现事件,并为WIMP质量为100GeV/c(2)(1TeV/c(2),10TeV/c(2))的暗物质-核子自旋独立截面设定了90%C.L.上限为1.14×10(-44)cm(2)(3.78×10(-44)cm(2),3.43×10(-43)cm(2))。
The DarkSide-50 direct-detection dark matter experiment is a dual-phase argon time projection chamber operating at Laboratori Nazionali del Gran Sasso. This paper reports on the blind analysis of a (16 660 +/- 270) kg d exposure using a target of low-radioactivity argon extracted from underground sources. We find no events in the dark matter selection box and set a 90% C. L. upper limit on the dark matter-nucleon spin-independent cross section of 1.14 x 10(-44) cm(2) (3.78 x 10(-44) cm(2), 3.43 x 10(-43) cm(2)) for a WIMP mass of 100 GeV/c(2) (1 TeV/c(2), 10 TeV/c(2)).