Speaker
Thomas Mannel
(Siegen University)
Description
The talk consist of two parts. In the first part I present a new method for the extraction of $V_{cb}$ which is based on a reduced set of non-perturbative parameters. This will eventually allow us to extract this CKM element up to order $1/m^4$ without relying on model for non-perturbative physics. in the second part I present the calculation of the QCD corrections to the $1/m^3$ contributions and present first results.
Author
Thomas Mannel
(Siegen University)
