Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8132745 | Astroparticle Physics | 2018 | 9 Pages |
Abstract
New Experiments With Spheres-Gas (NEWS-G) is a direct dark matter detection experiment using Spherical Proportional Counters (SPCs) with light noble gases to search for low-mass Weakly Interacting Massive Particles (WIMPs). We report the results from the first physics run taken at the Laboratoire Souterrain de Modane (LSM) with SEDINE, a 60 cm diameter prototype SPC operated with a mixture of Ne + CH4 (0.7%) at 3.1 bars for a total exposure of 9.6âkgâ¯Â·â¯days. New constraints are set on the spin-independent WIMP-nucleon scattering cross-section in the sub-GeV/c2 mass region. We exclude cross-sections above 4.4Ã10â37cm2 at 90% confidence level (C.L.) for a 0.5 GeV/c2 WIMP. The competitive results obtained with SEDINE are promising for the next phase of the NEWS-G experiment: a 140 cm diameter SPC to be installed at SNOLAB by summer 2018.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Q. Arnaud, D. Asner, J.-P. Bard, A. Brossard, B. Cai, M. Chapellier, M. Clark, E.C. Corcoran, T. Dandl, A. Dastgheibi-Fard, K. Dering, P. Di Stefano, D. Durnford, G. Gerbier, I. Giomataris, P. Gorel, M. Gros, O. Guillaudin, M. Zampaolo,