7–9 oct. 2026
IMT Atlantique
Fuseau horaire Europe/Paris

Probing the Standard Model to eleven digits with the muon magnetic moment

8 oct. 2026, 09:10
20m
Amphi G.Besse (IMT Atlantique)

Amphi G.Besse

IMT Atlantique

4 rue Alfred Kastler 44307 Nantes cedex 3

Orateur

Laurent Lellouch (CNRS & Aix-Marseille U.)

Description

The Muon g−2 Experiment at Fermi National Accelerator Laboratory recently published the results of its six-year data-taking campaign, reporting a measurement of the muon's anomalous magnetic moment with unprecedented precision of 0.127 parts per billion, providing one of the most stringent tests of the Standard Model. However, to fully leverage this experimental tour de force in the search for new fundamental physics, a theoretical prediction of comparable accuracy is required.

In this talk, I will survey the current experimental and theoretical landscape of the muon's anomalous magnetic moment before presenting first-principles calculations of the leading hadronic contributions, the largest source of uncertainty in the Standard Model prediction. When combined with all other Standard Model contributions, this calculation yields a prediction that agrees with experiment within half a standard deviation, confirming the Standard Model to eleven significant digits and sharpening constraints on physics beyond it.

Working Group WG4. QCD models and non-perturbative QCD
Type of oral contribution Both

Auteur

Laurent Lellouch (CNRS & Aix-Marseille U.)

Documents de présentation

Aucun document.