Resonant Two-body D Decays

Details Resonant Two-body D Decays Resonant Two-body D Decays

1999-08-04

arxiv.org/abs/hep-ph/9908237v2

Phys.Rev.Lett. 83 (1999) 4005-4008

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published in Physical Review Letters, some corrections, references updated

Scientific paper

10.1103/PhysRevLett.83.4005

The contribution of a $K^*(1430)$ $0^+$ resonance to $D^0\to K^-\pi^+$ is calculated by applying the soft pion theorem to $D^+ \to K^* \pi^+$, and is found to be about 30% of the measured amplitude and to be larger than the $\Delta I=3/2$ component of this amplitude. We estimate a 70% contribution to the total amplitude from a higher $K^*(1950)$ resonance. This implies large deviations from factorization in D decay amplitudes, a lifetime difference between D^0 and D^+, and an enhancement of $D^0-\bar D^0$ mixing due to SU(3) breaking.

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