First results from the NEWS-G direct dark matter search experiment at the LSM

被引：108

作者：

Arnaud, Q. ^{[1
]}

Asner, D. ^{[2
]}

Bard, J. -P. ^{[3
]}

Brossard, A. ^{[1
,3
]}

Cai, B. ^{[1
]}

Chapellier, M. ^{[1
]}

Clark, M. ^{[1
]}

Corcoran, E. C. ^{[4
]}

Dandl, T. ^{[5
]}

Dastgheibi-Fard, A. ^{[6
]}

Dering, K. ^{[1
]}

Di Stefano, P. ^{[1
]}

Durnford, D. ^{[1
]}

Gerbier, G. ^{[1
]}

Giomataris, I. ^{[3
]}

Gorel, P. ^{[7
]}

Gros, M. ^{[3
]}

Guillaudin, O. ^{[8
]}

Hoppe, E. W. ^{[2
]}

Kamaha, A. ^{[1
]}

Katsioulas, I. ^{[3
]}

Kelly, D. G. ^{[1
,4
]}

Martin, R. D. ^{[1
]}

McDonald, J.

Muraz, J. -F.

Mols, J. -P. ^{[3
]}

Navick, X-F. ^{[3
]}

Papaevangelou, T. ^{[3
]}

Piquemal, F. ^{[6
]}

Roth, S. ^{[1
,10
]}

Santos, D. ^{[8
]}

Savvidis, I. ^{[9
]}

Ulrich, A. ^{[5
]}

Fernandez, F. Vazquez de Sola ^{[1
]}

Zampaolo, M. ^{[6
]}

机构：

[1] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada

[2] Pacific Northwest Natl Lab, Richland, WA 99354 USA

[3] Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France

[4] Royal Mil Coll Canada, Chem & Chem Engn Dept, Kingston, ON K7K 7B4, Canada

[5] Tech Univ Munich, Phys Dept E12, James Franck Str 1, D-85748 Garching, Germany

[6] Univ Grenoble Alpes, LSM, CNRS IN2P3, Modane, France

[7] SNOLAB, Lively, ON P3Y 1N2, Canada

[8] Univ Grenoble Alpes, LPSC, CNRS IN2P3, Grenoble, France

[9] Aristotle Univ Thessaloniki, Dept Phys, GR-52124 Thessaloniki, Greece

[10] Tech Univ Munich, Munich, Germany

来源：

ASTROPARTICLE PHYSICS | 2018年 / 97卷

关键词：

Spherical proportional counter; Dark matter; Direct detection; Low-mass WIMPs; L/K-CAPTURE RATIO; GASES;

D O I：

10.1016/j.astropartphys.2017.10.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 9.6 kg. days. New constraints are set on the spin-independent WIMP-nucleon scattering cross-section in the sub-GeV/c(2) mass region. We exclude cross-sections above 4.4 x 10(-37) cm(2) at 90% confidence level (C.L.) for a 0.5 GeV/c(2) 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. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：54 / 62

页数：9

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