Three-loop corrections to the muon and heavy quark decay rates

Michał Czakon, Andrzej Czarnecki, Matthew Dowling

Recently, $O({\alpha }^3)$ corrections to the muon decay rate and $O({\alpha }_s^3)$ to heavy quark decays have been determined by Fael, Schönwald, and Steinhauser. This is the first such perturba…