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Amplitude analyses of four body $D$ decays are of significant interest formultiple reasons, including their potential contribution to CP violationstudies in both $B$ and $D$ decays. The resonant substructure of a four bodydecay has many possible components and combinations. Here, a genetic algorithmfor the optimisation of such amplitude models is described. The application toan amplitude analysis of the decay mode $D^0 \to \pi^- \pi^+ \pi^+ \pi^-$ usingCLEO-c data is discussed and the performance of the algorithm is verified onsimulated data, showing convergence to the original model.

Finding an Amplitude Model for $D^0 \to \pi^- \pi^+ \pi^+ \pi^-$ using CLEO-c Data