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. Päs, Y. Ramachers, H. Strecker, V. Alexeev, A. Bakalyarov, A. Balysh, S. T. Belyaev, V. I. Lebedev, S. Zhukov
Abstract
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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