Speaker
Kay Schoenwald
(Karlsruhe)
Description
In this talk we present our recent calculation of order $\alpha_s^3$ corrections to the semi-leptonic $b\to c$ and the muon decays. The calculation has been performed in an expansion around the heavy-daughter limit $m_c \sim m_b$, but also shows decent convergence for $m_c=0$ from which the contribution to the muon decay can be extracted.
