Coupled-channel analysis of $D^+\to K^- \pi^+\pi^+$ decay

Understand

We perform a coupled-channel analysis of pseudodata for the D+-> K-pi+pi+ Dalitz plot.

• The pseudodata are generated from the isobar model of the E791 Collaboration, and are reasonably realistic.
• We demonstrate that it is feasible to analyze the high-quality data within a coupled-channel framework that describes the final state interaction of D+-> K-pi+pi+ as multiple rescatterings of three pseudoscalar mesons through two-pseudoscalar-meson interactions in accordance with the two-body and three-body unitarity.
• The two-pseudoscalar-meson interactions are designed to reproduce empirical pi pi and pi bar K scattering amplitudes.