Thursday, January 19, 2006, 16:00
WHGA Auditorium
R. Sommer, DESY Zeuthen
Abstract:
In the future flavour physics will require higher and higher precision
in order to determine the standard model quark mixing matrix and in
particular to uncover contributions of physics beyond the standard
model. A precise and reliable knowledge of hadronic matrix elements will
be necessary to make full use of the available experimental information.
Lattice gauge theory offers the computational tool to compute a number
of these matrix elements.
We discuss the challenges that lattice gauge theories are facing, in particular in the all-important treatment of beauty quarks. The development of a fully non-perturbative formulation of Heavy Quark Effective Theory will be explained in detail. This includes the determination of the parameters of the effective theory from QCD, thus preserving the predictivity of QCD.