Speaker
Prof.
Matthias Steinhauser
(KIT)
Description
The anomalous magnetic moments of the electron and muon have been
measured to high accuracy. On the theory-side they are predicted
including quantum corrections up to five loops. Whereas three-loop
corrections are known analytically the four- and five-loop terms are
only available in numerical form. In this talk first analytic
four-loop results are presented. As a byproduct the fermionic
contribution to the four-loop relation between the MSbar and on-shell
quark mass in QCD is obtained.
Primary author
Prof.
Matthias Steinhauser
(KIT)
