Mystery no more Artist’s conception of the magnetic moment of the muon – a subatomic particle similar to, but heavier than, the electron. 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. Now, these hopes have been dashed. (Courtesy: Dani Zemba / Penn State)"> Mystery no more Artist’s conception of the magnetic moment of the muon – a subatomic particle similar to, but heavier than, the electron. 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. Now, these hopes have been dashed.…