Interference effects in Kη and Kη′ decay modes of heavy mesons. Clues to understanding weak transitions and CP violation

Abstract Interference between amplitudes producing η and η′ mesons via their strange and nonstrange components give relative suppression factors of an order of magnitude in certain diagrams and can be used to identify penguin contributions to B→Kη and B→Kη′ decays as well as annihilation diagram contributions to corresponding D decays. Similar suppression factors also arise in D 0 →π 0 η and D 0 →π 0 η′ decays and in charmonium decays to K + K − η and K + K − η′.