$B_s\to {\mu }^{+}{\mu }^{-}$ and $\bar{B}\to X_s\gamma$ to NNLO

Matthias Steinhauser

In this contribution, the recent calculation of next-to-next-to-leading order QCD and next-to-leading order electroweak corrections to the decay $B_s\to {\mu }^{+}{\mu }^{-}$ is reviewed, and a…