Ultimate precision Standard Model tests: the muon magnetic anomaly
Andreas Höcker (CERN)
DESY Auditorium, 16.45 h
The magnetic moment of the electron and muon is one of the most precisely measured and predicted particle property. Quantum fluctuations due to electromagnetic, weak and strong interactions cause a deviation of the magnetic moment from the gyromagnetic ratio that is parametrised by the anomalous magnetic moment, (g-2)/2. In case of the muon, that quantity has sensitivity to new physics if the contribution is of similar size as that of weak interactions. At the dawn of a new muon g-2 experiment at Fermilab and a proposed experiment at J-PARC, the seminar gives a brief historical review and discusses recent improvements in the Standard Model prediction which is dominated by the uncertainty in the strong interaction contribution.