Ethan Siegel at Big Think:
Perhaps the greatest quest in particle physics, for perhaps half a century now, has been to find a discrepancy between theory and experiment when it comes to the Standard Model. One fascinating place to look is at the magnetic moment of the muon: a heavy, unstable relative of the electron. A Fermilab experiment known as “muon g-2″ has revealed a discrepancy between theory and experiment at greater than the 4-sigma level: approaching the gold standard for discovery. But is this evidence for new physics?
According to a new theoretical calculation, the answer is no: it’s a flaw in the technique used by the majority of the theoretical community. Using new lattice QCD techniques, theory and experiment align, suggesting that the puzzle has finally been solved. Here’s how.
More here.
Enjoying the content on 3QD? Help keep us going by donating now.