Results from the first use of low radioactivity argon in a dark matter search

By T. D. C. P. Agnes, L. Agostino, I. Albuquerque, T. Alexander, A. Alton, K. Arisaka, H. Back, B. Baldin, K. Biery, G. Bonfini and 150 more. 2015

189 citations recorded by the source corpus.

Liquid argon is a bright scintillator with potent particle identification properties, making it an attractive target for direct-detection dark matter searches. The DarkSide-50 dark matter search here reports the first WIMP search results obtained using a target of low-radioactivity argon. DarkSide-50 is a dark matter detector, using two-phase liquid argon time projection chamber, located at the Laboratori Nazionali del Gran Sasso. The underground argon is shown to contain Ar-39 at a level reduced by a factor (1.4 +- 0.2) x 103 relative to atmospheric argon. We report a background-free null result from (2616 +- 43) kg d of data, accumulated over 70.9 live-days. When combined with our previous search using an atmospheric argon, the 90 % C.L. upper limit on the WIMP-nucleon spin-independent cross section based on zero events found in the WIMP search regions, is 2.0 x 10-44 cm2 (8.6 x 10-44 cm2, 8.0 x 10-43 cm2) for a WIMP mass of 100 GeV/c2 (1 TeV/c2 , 10 TeV/c2).

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/97a199fc7e7cfbda34149fcf85be594203666e0a

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In Atomic and Molecular Physics, and Optics

1. L. Rauch
2. N. Bernal
3. H. Ara'ujo
4. V. Chepel

In Nuclear and High Energy Physics

1. V. Hannen
2. G. Drexlin
3. M. Schumann
4. Manfred Lindner
5. K. Tuominen
6. Roberto Trotta
7. L. Krauss
8. K. Zuber

Citations in the corpus

• The Dawn of FIMP Dark Matter: A Review of Models and Constraints (2017, methodology): “A new generation of direct detection DM experiments includes LZ [48, 49], DARWIN [50], DarkSide-20k [51, 52], PICO-250 [53] and SuperCDMS [54].”
• DARWIN: towards the ultimate dark matter detector (2016, methodology): “83mKr has been successfully used in DarkSide-50 [155], XENON100 and LUX [101].”