Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The general QCD parametrization and the hierarchy of its parameters.
  (Why some simple models of hadrons work so well)   After summarizing the basic points of the general QCD parametrization (GP) we
discuss systematically its applications to the properties of the lowest
families of baryons and mesons. We show how the hierarchy of the parameters in
the GP emerges clearly in the properties of hadrons. Among other things, it
explains why simple models can work reasonably well and clarifies the
relationship between current and constituent quarks. More details on the hadron
properties discussed with the GP appear from the list of secrions at the
beginning of the paper.

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The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin