First results of the EDELWEISS-II WIMP search using Ge cryogenic detectors with interleaved electrodes

被引：51

作者：

Armengaud, E. ^{[1
]}

Augier, C. ^{[7
]}

Benoit, A. ^{[2
]}

Berge, L. ^{[3
]}

Besida, O. ^{[1
]}

Bluemer, J. ^{[4
,5
]}

Broniatowski, A. ^{[3
]}

Chantelauze, A. ^{[5
]}

Chapellier, M. ^{[3
]}

Chardin, G. ^{[3
]}

Charlieux, F. ^{[7
]}

Collin, S. ^{[3
]}

Defay, X. ^{[3
]}

De Jesus, M. ^{[7
]}

Di Stefano, P. ^{[7
]}

Dolgorouki, Y. ^{[3
]}

Domange, J. ^{[1
,3
]}

Dumoulin, L. ^{[3
]}

Eitel, K. ^{[5
]}

Gascon, J. ^{[7
]}

Gerbier, G. ^{[1
]}

Gros, M. ^{[1
]}

Hannawald, M. ^{[1
]}

Herve, S. ^{[1
]}

Juillard, A. ^{[7
]}

Kluck, H. ^{[5
]}

Kozlov, V. ^{[5
]}

Lemrani, R. ^{[1
]}

Loaiza, P. ^{[9
]}

Lubashevskiy, A. ^{[8
]}

Marnieros, S. ^{[3
]}

Navick, X. -F. ^{[1
]}

Olivieri, E. ^{[3
]}

Parie, P. ^{[6
]}

Paul, B. ^{[1
]}

Rozov, S. ^{[8
]}

Sanglard, V. ^{[7
]}

Scorza, S. ^{[7
]}

Semikh, S. ^{[8
]}

Torrento-Coello, A. S. ^{[1
]}

Vagneron, L. ^{[7
]}

Verdier, M. -A. ^{[7
]}

Yakushev, E. ^{[8
]}

机构：

[1] CEA, Ctr Etud Saclay, IRFU, F-91191 Gif Sur Yvette, France

[2] CNRS Neel, F-38042 Grenoble 9, France

[3] Univ Paris 11, CNRS, IN2P3, CSNSM, F-91405 Orsay, France

[4] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[5] Karlsruhe Inst Technol, Inst Kernphys, D-76021 Karlsruhe, Germany

[6] CEA, Ctr Etud Saclay, IRAMIS, F-91191 Gif Sur Yvette, France

[7] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France

[8] Joint Inst Nucl Res, Lab Nucl Problems, Dubna 141980, Moscow Region, Russia

[9] CEA, CNRS, Lab Souterrain Modane, F-73500 Modane, France

来源：

PHYSICS LETTERS B | 2010年 / 687卷 / 4-5期

基金：

俄罗斯基础研究基金会;

关键词：

Dark matter; Cryogenic Ge detectors; WIMP searches; DARK-MATTER SEARCHES; GERMANIUM DETECTORS; IONIZATION;

D O I：

10.1016/j.physletb.2010.03.057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The EDELWEISS-II Collaboration has performed a direct search for WIMP dark matter with an array of ten 400 g heat-and-ionization cryogenic detectors equipped with interleaved electrodes for the rejection of near-surface events. Six months of continuous operation at the Laboratoire Souterrain de Modane have been achieved. The observation of one nuclear recoil candidate above 20 keV in an effective exposure of 144 kg cl is interpreted in terms of limits on the cross-section of spin-independent interactions of WIMPs and nucleons. A cross-section of 1.0 x 10(-7) pb is excluded at 90% CL for a WIMP mass of 80 GeV/c(2). This result demonstrates for the first time the very high background rejection capabilities of these simple and robust detectors in an actual WIMP search experiment. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：294 / 298

页数：5

共 23 条

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