Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonleptonic two-body charmed meson decays in an effective model for
  their semileptonic decays   We analyze $D \to P V$, $D \to PP$ and $D \to VV$ decays within a model
developed to describe the semileptonic decays $D \to V l \nu_l$ and $D\to P l
\nu_l$. This model combines the heavy quark effective Lagrangian and chiral
perturbation theory. We determine amplitudes for decays in which the direct
weak annihilation of the initial $D$ meson is absent or negligible, and in
which the final state interactions are small. This analysis reduces the
arbitrariness in the choice of model parameters. The calculated decay widths
are in good agreement with the experimental results.

36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio