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

New results after 0.69 kg yr of measurement with an enriched ${}^{76}\mathrm{Ge}$ 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.