Physicists Solve a Muon Mystery. Now, Old Results Don't Add Up
4 hours ago
- For 25 years, a discrepancy in muon wobble measurements hinted at unknown particles, but a 2021 lattice QCD calculation matched experimental results, creating a new puzzle.
- The data-driven method, based on electron-positron collisions, predicts a different muon g-2 than the lattice approach, leading to conflicting results.
- New measurements from the VEPP-2000 collider in Siberia show a significantly different pion production rate, challenging both old and new experimental data.
- Physicists are scrutinizing the Siberian results and other experiments to determine if the discrepancies are due to overlooked details or signs of new physics.
- The resolution of this mystery could impact our understanding of the strong force and the existence of unknown particles.