Tests of Factorization and SU(3) Relations in B Decays into Heavy-Light Final States

Understand

Using data from the B factories and the Tevatron, we perform tests of how well non-leptonic B decays of the kind B -> D^{(*)}_{(s)} P, where P is a pion or kaon, are described within the factorization framework.

• We find that factorization works well - as is theoretically expected - for color-allowed, tree-diagram-like topologies.
• Moreover, also exchange topologies, which have a non-factorizable character, do not show any anomalous behavior.
• We discuss also isospin triangles between the B -> D^{(*)} pi decay amplitudes, and determine the corresponding amplitudes in the complex plane, which show a significant enhancement of the color-suppressed tree contribution with respect to the factorization picture.