Speaker
Description
A well known technique to determine the decay amplitudes
of non-leptonic B meson processes is QCD factorization. One of the main issues
faced by this procedure is the analytical determination of power suppressed terms,
for instance of annihilation topologies. In this talk we describe the extraction of the
annihilation contributions from data. Our method is based on establishing a set of
rules which allow to transform the SU(3)-invariant description of B decay
amplitudes into pairs of psudoscalar particles and the QCD factorization
decomposition. Our approach provides not only the size of this contributions from
phenomenological considerations but also a formal proof of the maximal number of
degrees of freedom in the SU(3)-invariant, the topological and the
QCD-factorization representations of B decay amplitudes into Pseudoscalar
particles.
