Speaker
Manuel Egner
(KIT TTP)
Description
The decay of B mesons can be predicted within the Heavy Quark Expansion as the decay of a free bottom quark plus corrections which are suppressed by powers of $1/m_b$. This talk describes the calculation of the NNLO QCD corrections to nonleptonic decays of a free bottom quark including charm quark mass effects. In particular I will outline the challenges in connection to the computation of master integrals, the renormalization of the effective operators and the problems which arise from calculating traces with $\gamma_5$ in $d$ dimensions.
Primary author
Manuel Egner
(KIT TTP)
