An. Kamal et Tn. Pham, TEST OF FACTORIZATION OF D-]PI-PI AND D-]K(K)OVER-BAR DECAYS, Physical review. D. Particles and fields, 50(3), 1994, pp. 1832-1835
We propose a method that involves quantities independent of strong int
eraction phases to test the factorization model in D --> pipi and KKBA
R decays. The method allows us to conclude that the factorization mode
l correctly predicts \A2pipi\, overestimates \A0pipi\ and \A1KKBAR\, a
nd underestimates \A0KKBAR\. We rule out the Penguin mechanism as the
solution to the disagreement between theory and experiment. We believe
inelastic final state interactions are responsible for bridging the g
ap between theory and experiment.