Tuesday, 8 December 2009

Dark Matter Discovered?

The Science Blogs are alive with rumours that traces of dark matter has been found deep underground.

The Soudan Underground Laboratory in Minnesota is the leading deep underground science and engineering laboratory in the United States.

There the Cryogenic Dark Matter Search (CDMS) experiment consists of two dozens of germanium and silicon ice-hockey pucks cooled down to 40 mK. When a particle hits the detector it produces both phonons and ionization, and certain tell-tale features of these two signals allow the experimenters to sort out electron events (expected to be produced by mundane background processes) from nuclear recoils (expected to be produced by scattering of dark matter particles, as the apparatus is well shielded from ordinary nucleons).

Today, rumours that there latest experiements reveal telltale signs of dark matter began to leak:


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