First results of the IGEX dark matter experiment at the Canfranc Underground Laboratory

被引：2
|
作者：
Cebrián, S [1 ]
Morales, A
Aalseth, CE
Avignone, FT
Brodzinski, RL
García, E
González, D
Hensley, WK
Irastorza, IG
Kirpichnikov, IV
Klimenko, AA
Miley, HS
Morales, J
de Solórzano, AO
Osetrov, SB
Pogosov, VS
Puimedón, J
Reeves, JH
Sarsa, ML
Scopel, S
Smolnikov, AA
Tamanyan, AG
Vasenko, AA
Vasiliev, SI
Villar, JA
机构：
[1] Univ Zaragoza, Lab Nucl & High Phys, E-50009 Zaragoza, Spain
[2] Univ S Carolina, Columbia, SC 29208 USA
[3] Pacific NW Natl Lab, Richland, WA 99352 USA
[4] Inst Theoret & Expt Phys, Moscow 117259, Russia
[5] Baksan Neutrino Observ, Inst Nucl Res, Neutrino 361609, Russia
[6] Yerevan Phys Inst, Yerevan 375036, Armenia
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2001年 / 95卷
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0920-5632(01)01086-6
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The enriched Ge-76 double-beta decay detectors from the International Germanium EXperiment (IGEX), operating in the Canfranc Underground Laboratory with an overbuden of 2450 m.w.e., were recently upgraded to use them also in a search for WIMPs. This paper presents a description of the experiment and the data analysis as well as a new exclusion plot, sigma (m), derived from the IGEX data for WIMP-nucleon spin-independent interaction. To obtain this result, 30 days of data from one 2-kg IGEX detector, with an energy threshold E-thr similar to 4 keV, have been considered. These results improve the exclusion limits derived from other conventional ionization germanium experiments in the similar to 50 GeV DAMA region.
引用
收藏
页码：229 / 232
页数：4
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