Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of the $\psi(4040)$ and $\psi(4160)$ decay into $D^{(\ast)}
  \bar D^{(\ast)}$, $D_s^{(\ast)}\bar D_s^{(\ast)}$   We have performed an analysis of the $e^+ e^- \to D^{(*)} \bar D^{(*)}$ data
in the region of the $\psi(4040)$ and $\psi(4160)$ resonances which have a
substantial overlap and require special care. By using the $^3 P_0$ model to
relate the different $D^{(*)} \bar D^{(*)}$ production modes, we make
predictions for production of these channels and compare with experiment and
other theoretical approaches. As a side effect we find that these resonances
qualify largely as $c \bar c$ states and the weight of the meson-meson
components in the wave function is very small.

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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex