Artist’s conception of the mystery of the magnetic moment of the muon (IMAGE)
Caption
Artist’s conception of the mystery of the magnetic moment of the muon—a sub-atomic particle similar to, but heavier than, an electron (represented by the Greek letter mu). More than half a century of measurements of that fundamental property of the muon did not line up with theoretical predictions, raising hopes that new physics might be behind the unexplained inconsistency.
Credit
Dani Zemba / Penn State
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CC BY-NC-ND