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Title: The Coolest Antiprotons
Date: 07/02/2010
Publication: Physical Review Focus
Extended Text:

A new record low temperature for a cloud of antiprotons was measured at CERN in Geneva, announces a report in the 2 July Physical Review Letters. Researchers cooled a cloud of about 4,000 antiprotons down to 9 kelvin using a standard approach for cooling atoms that has never been used with charged particles or ions. The technique could provide a new way to create and trap antihydrogen, which could help researchers probe a basic symmetry of nature.