DarkSide-50 532-day Dark Matter Search with Low-Radioactivity Argon [CEA]

http://arxiv.org/abs/1802.07198


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 and spin-independent dark matter-nucleon coupling results from a 532.4 live-days exposure, using a target of low-radioactivity argon extracted from underground sources. The background-free result in the dark matter selection box gave no evidence for dark matter. The present blind analysis sets a 90% C.L. upper limit on the dark matter-nucleon spin-independent cross section of 1.1E-44 cm^2 (3.8E-44 cm^2, 3.4E-43 cm^2) for a WIMP mass of 100 GeV/c^2 (1 TeV/c^2, 10 TeV/c^2).

Read this paper on arXiv…

DarkSide. Collaboration, P. Agnes, I. Albuquerque, et. al.
Wed, 21 Feb 18
50/58

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