Abstract
Euclidean four-point Green functions D → K π are studied on the lattice using Wilson fermions in the quenched approximation. The mass dependence of amplitudes “at rest” are compared with the vacuum saturation model. We estimate an effective 1 N value for D decays. Factorization and vacuum saturation are tested for amplitudes that are leading order and next to leading order in 1 N . We note the possibility of a scalar resonance affecting the isospin 1 2 amplitude in D → K π.
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