학술논문
New constraints on WIMPs from the Canfranc IGEX dark matter search
Document Type
Working Paper
Author
Morales, A.; Aalseth, C. E.; Avignone III, F. T.; Brodzinski, R. L.; Cebrian, S.; Garcia, E.; Gonzalez, D.; Hensley, W. K.; Irastorza, I. G.; Kirpichnikov, I. V.; Klimenko, A. A.; Miley, H. S.; Morales, J.; de Solorzano, A. Ortiz; Osetrov, S. B.; Pogosov, V. S.; Puimedon, J.; Reeves, J. H.; Sarsa, M. L.; Scopel, S.; Smolnikov, A. A.; Tamanyan, A. G.; Vasenko, A. A.; Vasiliev, S. I.; Villar, J. A.
Source
Phys.Lett.B489:268-272,2000
Subject
Language
Abstract
The IGEX Collaboration enriched 76Ge double-beta decay detectors are currently operating in the Canfranc Underground Laboratory with an overburden of 2450 m.w.e. A recent upgrade has made it possible to use them in a search for WIMPs. A new exclusion plot has been derived for WIMP-nucleon spin-independent interaction. To obtain this result, 30 days of data from one IGEX detector, which has an energy threshold of ~4 keV, have been considered. These data improve the exclusion limits derived from other germanium diode experiments in the ~50 GeV DAMA region, and show that with a moderate improvement of the background below 10 keV, the DAMA region may be tested with an additional 1 kg-year of exposure.
Comment: 7 pages, 2 figures, submitted to Physics Letters
Comment: 7 pages, 2 figures, submitted to Physics Letters