Michel Davier stated that there is only a 1 in 40,000 chance that the observed difference between the Muon g-2 experimental result and the theoretical prediction is due to statistical chance.
Notes on verification
The statistical figure (1 in 40,000 ~ 4.2 sigma) is well-corroborated by Fermilab and physics press sources describing the 2021 Muon g-2 announcement. However, the specific attribution of this quote to Michel Davier could not be independently verified beyond the CNRS article, so confidence in the exact quote/attribution is moderate rather than high.
Sources
- Vers un nouveau continent de la physique ? | CNRS Le journal (lejournal.cnrs.fr)
- https://muon-g-2.fnal.gov/result2021.pdf (muon-g-2.fnal.gov)
- https://www.symmetrymagazine.org/article/muon-g-2-experiment-makes-highly-anticipated-announcement (symmetrymagazine.org)