Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pauli Interference in the 't Hooft Model: Heavy Quark Expansion and
  Quark-Hadron Duality   Pauli Interference in decays of heavy flavor mesons, a genuinely nonleptonic
nonperturbative effect, is considered in the 't Hooft model. Analytic summation
of the exclusive decay widths yields the same expression as obtained in the
OPE-based approach. Threshold-related violations of local duality in PI are
found to be suppressed. A novel case is identified where the OPE effect is
completely saturated by a single final state.

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The categories of this paper are: chao-dyn
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The categories of this paper are: math
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The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
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The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol