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Experimental upper limits (90 percent confidence level) for the WIMP-nucleon spin-independent cross section as a function of WIMP mass. The black dotted line is from the present analysis, and the blue solid line includes previous CDMS II silicon-detector data. Also shown are limits from the CDMS II germanium-detector standard and low-threshold analyses (dark and light dashed red), as well as limits from the XENON collaboration (dark and light dash-dotted green). The magenta oval shows a possible WIMP signal region proposed…

The figure shows the rates for light WIMP interactions (technically, the spin-independent WIMP-nucleon cross section) versus WIMP mass from several different direct detection experiments. The closed contours show possible hints for light WIMP detections from a few experiments, while the open curves indicate the lack of WIMP signals from other experiments (upper limits). The two black curves denoted by crosses show results anticipated in the coming year from the data being taken by CDMS at Soudan. Other experiments, such as…