dark matter

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How dark matter became a particle

    From CERN Courier, April 13, 2017: It took decades for dark matter to enter the lexicon of particle physics. Today, explaining the nature and abundance of dark matter is one of the most pressing problems in the field. Fermilab and University of Chicago’s Dan Hooper and University of Amsterdam’s Gianfranco Bertone review the 80-year history.

    Case weakens for antimatter sign of dark matter

      From Science, March 6, 2017: For more than a decade, multiple experiments have found an unexpected excess in the number of high-energy antielectrons, or positrons, in space. A team led by Fermilab’s Dan Hooper has shown that pulsars, not dark matter annihilation, can indeed produce most or all of the excess.