Improved exclusion limits from the EDELWEISS WIMP search

被引：222

作者：

Benoit, A

Bergé, L

Broniatowski, A

Chabert, L

Chambon, B

Chapellier, M

Chardin, G

Charvin, R

De Jésus, M

Di Stefano, P

Drain, D

Dumoulin, L

Gascon, J

Gerbier, G

Gerlic, E

Goldbach, C

Goyot, M

Gros, M

Hadjout, JP

Hervé, S

Juillard, A

de Lesquen, A

Loidl, M

Mallet, J

Marnieros, S

Martineau, O

Mirabolfathi, N

Mosca, L

Navick, XF

Nollez, G

Pari, P

Riccio, C

Sanglard, V

Stern, M

Vagneron, L

机构：

[1] CNRS, Ctr Rech Tres Basses Temp, SPM, F-38042 Grenoble, France

[2] Univ Paris 11, CNRS, Ctr Spect Nucl & Spect Masse, IN2P3, F-91405 Orsay, France

[3] Univ Lyon 1, CNRS, Inst Phys Nucl Lyon, IN2P3, F-69622 Villeurbanne, France

[4] CENS, CEA, DSM, DRECAM, F-91191 Gif Sur Yvette, France

[5] CENS, CEA, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

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

[7] CNRS, INSU, Inst Astrophys Paris, F-75014 Paris, France

来源：

PHYSICS LETTERS B | 2002年 / 545卷 / 1-2期

关键词：

dark matter; WIMPS; supersymmetry; germanium detectors; bolometers;

D O I：

10.1016/S0370-2693(02)02238-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The EDELWEISS experiment has improved its sensitivity for the direct search for WIMP dark matter. In the recoil energy range relevant for WIMP masses below 10 TeV/c(2), no nuclear recoils were observed in the fiducial volume of a heat-and-ionization cryogenic Ge detector operated in the low-background environment of the Laboratoire Souterrain de Modane in the Frejus Tunnel, during an effective exposure of 7.4 kg d. This result is combined with the previous EDELWEISS data to derive a limit on the cross-section for spin-independent interaction of WIMPs and nucleons as a function of WIMP mass, using standard nuclear physics and astrophysical assumptions. This limit excludes at more than 99.8% CL a WIMP candidate with a mass of 44 GeV/c(2) and a cross-section of 5.4 x 10(-6) pb, as reported by the DAMA Collaboration. A first sample of supersymmetric models are also excluded at 90% CL. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：43 / 49

页数：7

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