Dark matter spin-dependent limits for WIMP interactions on 19F by PICASSO

被引：122

作者：

Archambault, S. ^{[1
]}

Aubin, F. ^{[1
]}

Auger, M. ^{[1
]}

Behnke, E. ^{[5
]}

Beltran, B. ^{[3
]}

Clark, K. ^{[2
]}

Dai, X. ^{[2
]}

Davour, A. ^{[2
]}

Farine, J. ^{[4
]}

Faust, R. ^{[1
]}

Genest, M. -H. ^{[1
]}

Giroux, G. ^{[1
]}

Gornea, R. ^{[1
]}

Krauss, C. ^{[3
]}

Kumaratunga, S. ^{[1
]}

Lawson, I. ^{[7
]}

Leroy, C. ^{[1
]}

Lessard, L. ^{[1
]}

Levy, C. ^{[2
]}

Levine, I. ^{[5
]}

MacDonald, R. ^{[3
]}

Martin, J. -P. ^{[1
]}

Nadeau, P. ^{[4
]}

Noble, A. ^{[2
]}

Piro, M. -C. ^{[1
]}

Pospisil, S. ^{[6
]}

Shepherd, T. ^{[5
]}

Starinski, N. ^{[1
]}

Stekl, I. ^{[6
]}

Storey, C. ^{[2
]}

Wichoski, U. ^{[4
]}

Zacek, V. ^{[1
]}

机构：

[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[2] Queens Univ, Dept Phys, Kingston, ON K7L 3NG, Canada

[3] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada

[4] Laurentian Univ, Dept Phys, Sudbury, ON P3E 2C6, Canada

[5] Indiana Univ, Dept Phys & Astron, South Bend, IN 46634 USA

[6] Czech Tech Univ, Inst Expt & Appl Phys, CZ-12800 Prague, Czech Republic

[7] SNOLAB, Sudbury, ON P3E 2C6, Canada

来源：

PHYSICS LETTERS B | 2009年 / 682卷 / 02期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

Dark matter; WIMPS; Superheated droplets; SNOLAB; SUPERHEATED DROPLET DETECTORS;

D O I：

10.1016/j.physletb.2009.11.019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The PICASSO experiment at SNOLAB reports new results for spin-dependent WIMP interactions on F-19 using the Superheated droplet technique. A new generation of detectors and new features which enable background discrimination via the rejection of non-particle induced events are described. First results are presented for a subset of two detectors with target masses of F-19 of 65 g and 69 g respectively and a total exposure of 13.75 +/- 0.48 kgd. No dark matter signal was found and for WIMP masses around 24 GeV/c(2) new limits have been obtained on the spin-dependent cross section on F-19 of sigma(F) = 13.9 pb (90% C.L.) which can be converted into cross section limits on protons and neutrons of sigma(p) = 0.16 pb and sigma(n) = 2.60 pb respectively (90% C.L.). The obtained limits on protons restrict recent interpretations of the DAMA/LIBRA annual modulations in terms of spin-dependent interactions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：185 / 192

页数：8

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