Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards a Pion Generalized Parton Distribution Model from
  Dyson-Schwinger Equations   We compute the pion quark Generalized Parton Distribution H and quark Double
Distributions F and G in a coupled Bethe-Salpeter and Dyson-Schwinger approach
in terms of quark flavors or isospin states. We use simple analytic expressions
inspired by the numerical resolution of Dyson-Schwinger and Bethe-Salpeter
equations. We explicitly check the support and polynomiality properties, and
the behavior under charge conjugation or time invariance of our model. We
obtain analytic expressions for the pion Double Distributions and Generalized
Parton Distribution at vanishing pion momentum transfer at a low scale. Our
model compares very well to experimental pion form factor or Parton
Distribution Function data. This paper is the first stage of a GPD-modeling
program which will be pursued by incorporating more realistic solutions of the
Bethe-Salpeter and Dyson-Schwinger equations.

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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
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The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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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: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph