Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finding an Amplitude Model for $D^0 \to \pi^- \pi^+ \pi^+ \pi^-$ using
  CLEO-c Data   Amplitude analyses of four body $D$ decays are of significant interest for
multiple reasons, including their potential contribution to CP violation
studies in both $B$ and $D$ decays. The resonant substructure of a four body
decay has many possible components and combinations. Here, a genetic algorithm
for the optimisation of such amplitude models is described. The application to
an amplitude analysis of the decay mode $D^0 \to \pi^- \pi^+ \pi^+ \pi^-$ using
CLEO-c data is discussed and the performance of the algorithm is verified on
simulated data, showing convergence to the original model.

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The categories of this paper are: supr-con
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom