Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319302
Type: Artigo de periódico
Title: Results From The First Use Of Low Radioactivity Argon In A Dark Matter Search
Abstract: 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 a two-phase liquid argon time projection chamber, located at the Laboratori Nazionali del Gran Sasso. The underground argon is shown to contain Ar39 at a level reduced by a factor (1.4±0.2)×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 2.0×10-44 cm2 (8.6×10-44 cm2, 8.0×10-43 cm2) for a WIMP mass of 100 GeV/c2 (1 TeV/c2, 10 TeV/c2). © 2016 American Physical Society.
Editor: American Physical Society
Citation: Physical Review D - Particles, Fields, Gravitation And Cosmology. American Physical Society, v. 93, p. , 2016.
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.93.081101
Address: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963651472&partnerID=40&md5=a5b3b67034d533b7023e7338cc65dc3e
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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