Speaker
Gerhard Buchalla
(LMU Munich)
Description
We discuss a systematic framework for exclusive rare B decays
of the type B -> K(*) l+l- at large dilepton invariant mass q^2.
It is based on an operator product expansion (OPE) for the required
matrix elements of the nonleptonic weak Hamiltonian in this kinematic
regime. Matrix elements of subleading terms in the OPE are computed
explicitly and a quantitative estimate of duality violation is
presented. The main conclusion is that the high-q^2 region of
B -> K(*) l+l- is theoretically under excellent control.
Interesting opportunities exist for precision flavour physics
and new physics tests at the LHC and Super Flavour Factories.
Author
Gerhard Buchalla
(LMU Munich)
