Signs of dark matter from Minnesota mine

Signs of dark matter from Minnesota mine

Possible evidence for WIMPs reported, supporting claims of Italy-based experiment

By Ron Cowen, 18:12 PM May 3, 2011

An experiment in Minnesota is the first to bolster a long-contested claim that detectors a continent away have found evidence of particles called WIMPs.

WIMPs are theorized particles considered to be leading candidates for dark matter, invisible material believed to make up more than 80 percent of the matter in the universe.  In the Minnesota experiment, called COGENT, a hockey puck–sized chunk of germanium deep in a former iron mine attempts to record rare collisions with WIMPS.

In 15 mo...

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