US Edition
Physicists think they've solved the muon mystery
The calculation used supercomputer lattice quantum chromodynamics and experimental data to reach parts-per-billion precision, while further narrowing the search for new physics.
5 Articles
5 Articles
Hybrid calculation of hadronic vacuum polarization in muon g − 2 to 0.48%
For 50 years, the standard model of particle physics has been very successful in describing subatomic phenomena. In the past quarter of a century, this was challenged by a mismatch between its predictions and precision measurements of the anomalous magnetic moment of the muon, aμ. This disagreement was eventually reconciled, first through a determination in an ab initio lattice calculation1 of the most uncertain theoretical contribution, the lea…
For decades now, a deviation between the measured values and the standard model in the muon – the "heavy brother" of the electron – has given way to riddles. Because the anomalous magnetic moment of this elementary particle measured in experiments did not match the theoretical value. Now it turns out: not the experiments are the problem, but the theoretical value. Using a new approach, physicists [...] The contribution Magnetic Moment of the myo…
Coverage Details
Bias Distribution
- 100% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
