New limits on dark--matter WIMPs from the Heidelberg--Moscow experiment

123 182 Moscow; A. Bakalyarov; A. Balysh; B. Majorovits; Germany) V. Alexeev; G. Heusser; Heidelberg; H. P\"as; H. Strecker (Max--Planck--Institut fuer Kernphysik; H.V. Klapdor--Kleingrothaus

arxiv: hep-ex/9811045 · v1 · pith:UYX3KAKZnew · submitted 1998-11-27 · ✦ hep-ex

New limits on dark--matter WIMPs from the Heidelberg--Moscow experiment

L. Baudis , J. Hellmig , G. Heusser , H.V. Klapdor--Kleingrothaus , S. Kolb , B. Majorovits , H. P\"as , Y. Ramachers

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H. Strecker (Max--Planck--Institut fuer Kernphysik Heidelberg Germany) V. Alexeev A. Bakalyarov A. Balysh S.T. Belyaev V.I. Lebedev S. Zhukov (Russian Science Centre Kurchatov Institute 123 182 Moscow Russia)

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classification ✦ hep-ex

keywords limitsbackgroundenergyexperimentheidelberg--moscowactivecountscross

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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 counts/(kg d keV) in the energy region between 15 keV and 40 keV was reached.The derived limits on the WIMP--nucleon cross section are the most stringent limits on spin--independent interactions obtained to date by using essentially raw data without background subtraction.

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New limits on dark--matter WIMPs from the Heidelberg--Moscow experiment

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