Speaker
Matthias Steinhauser
Description
We review recent higher order calculations to properties of $B$ mesons. This includes next-to-next-to-leading order corrections to hadronic and next-to-next-to-next-to-leading order corrections to semi-leptonic $B$ meson decays. The latter is important in connection to the determination of the CKM matrix element $V_{cb}$. We also discuss next-to-next-to-leading order corrections to the width difference of in the $B-\bar{B}$ system.
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