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APS » Journals » Phys. Rev. D » Volume 59 » Issue 2
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Phys. Rev. D 59, 022001 (1998) [5 pages]

New limits on dark-matter weakly interacting particles from the Heidelberg-Moscow experiment

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L. Baudis, J. Hellmig, G. Heusser, H. V. Klapdor-Kleingrothaus*, S. Kolb, B. Majorovits, H. Päs, Y. Ramachers, and H. Strecker
Max-Planck-Institut für Kernphysik, P.O. Box 10 39 80, D-69029 Heidelberg, Germany

V. Alexeev, A. Bakalyarov, A. Balysh, S. T. Belyaev*, V. I. Lebedev, and S. Zhukov
Russian Science Center Kurchatov Institute, 123182 Moscow, Russia

Received 5 June 1998; published 24 December 1998

New results after 0.69 kg yr of measurement with an enriched 76Ge detector of the Heidelberg-Moscow experiment with an active mass of 2.758 kg are presented. An energy threshold of 9 keV and a background level of 0.042 cts/(kg d keV) in the energy region between 15 keV and 40 keV was reached. The derived limits on the weakly interacting massive particles–nucleon cross section are the most stringent limits on spin-independent interactions obtained to date by using essentially raw data without background subtraction.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.59.022001
DOI:
10.1103/PhysRevD.59.022001
PACS:
95.35.+d, 14.80.Ly

*Spokesmen of the collaboration.

 
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