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

Citation
S. Cebrian et al., First results of the IGEX dark matter experiment at the Canfranc Underground Laboratory, NUCL PH B-P, 95, 2001, pp. 229-232
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
0920-5632 → ACNP
Volume
95
Year of publication
2001
Pages
229 - 232
Database
ISI
SICI code
0920-5632(200104)95:<229:FROTID>2.0.ZU;2-Z
Abstract
The enriched Ge-76 double-beta decay detectors from the International Germa nium EXperiment (IGEX), operating in the Canfranc Underground Laboratory wi th 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 thi s result, 30 days of data from one 2-kg IGEX detector, with an energy thres hold E-thr similar to 4 keV, have been considered. These results improve th e exclusion limits derived from other conventional ionization germanium exp eriments in the similar to 50 GeV DAMA region.