Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resonance Contributions to the Electromagnetic Low Energy Constants of
  Chiral Perturbation Theory   The effective chiral Lagrangian of the strong and electromagnetic
interactions of the pseudoscalar mesons at low energies depends on a set of low
energy constants. We determine the contributions to the electromagnetic
coupling constants at order $O(e^2 p^2)$, which arise from resonances within a
photon loop. We give some implications of our results, in particular we discuss
in detail the effects on the corrections to Dashen's theorem.

26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys