Abstract
A model proposed recently for explaining the decay of pseudoscalar charmed mesons is applied to studying their explicit decay into two pseudoscalar mesons. The model realized quark confinement and asymptotic freedom in a simple minded way which leads in a natural way to the enhancement of the hitherto neglected W-exchange and W-annihilation decay modes. The key ingredient giving rise to this enhancement is the appearance of a new term violating the vector (as well as the axial-vector) current conservation in addition to the usual one proportional to the differences (sums) of quark masses which are negligibly small. In the valence quark approximation these new contributions are estimated and found to be in quite good agreement with all available data. Many predictions are made which could and should be experimentally checked.
Published Version
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