Limits on WIMP cross-sections from the NAIAD experiment at the boulby underground laboratory

被引:105
作者
Alner, GJ [1 ]
Araújo, HM
Arnison, GJ
Barton, JC
Bewick, A
Bungau, C
Camanzi, B
Carson, MJ
Davidge, D
Davies, GJ
Davies, JC
Daw, E
Dawson, JV
Duffy, C
Durkin, TJ
Gamble, T
Hart, SP
Hollingworth, R
Homer, GJ
Howard, AS
Ivaniouchenkov, I
Jones, WG
Joshi, MK
Kirkpatrick, J
Kudryavtsev, VA
Lawson, TB
Lebedenko, V
Lehner, MJ
Lewin, JD
Lightfoot, PK
Liubarsky, I
Lüscher, R
McMillan, JE
Morgan, B
Murphy, A
Nicklin, G
Nickolls, A
Paling, SM
Preece, RM
Quenby, JJ
Roberts, JW
Robinson, M
Smith, NJT
Smith, PF
Spooner, NJC
Sumner, TJ
Tovey, DR
Tziaferi, E
机构
[1] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England
[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
[3] Queen Mary Univ London, Dept Phys, London E1 4NS, England
[4] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
[5] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland
关键词
dark matter; WIMP; neutralino; pulse shape analysis; scintillation detectors; inorganic crystals;
D O I
10.1016/j.physletb.2000.09.001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The NAIAD experiment (NaI Advanced Detector) for WIMP dark matter searches at the Boulby Underground Laboratory (North Yorkshire, UK) ran from 2000 until 2003. A total of 44.9 kg x years of data collected with 2 encapsulated and 4 unencapsulated NaI(Tl) crystals with high light yield were included in the analysis. We present final results of this analysis carried out using pulse shape discrimination. No signal associated with nuclear recoils from WIMP interactions was observed in any run with any crystal. This allowed us to set upper limits on the WIMP-nucleon spin-independent and WIMP-proton spin-dependent cross-sections. The NAIAD experiment has so far imposed the most stringent constraints on the spin-dependent WIMP-proton cross-section. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:17 / 24
页数:8
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