Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photoabsorption sum rules and quark structure parameters of hadrons   Following the idea of the quark-hadron duality we present, within the
constituent quark model approach, the relations between different
bremsstrahlung-weihgted integrals of the nucleon resonance photoexcitation
cross sections and correlation functions of the quark dipole moments in the
nucleon ground state. These functions are of interest for checking detailed
quark-configuration structure of the nucleon state vector. Some applications of
this approach in meson sector are made and the role of meson degrees of freedom
in the electromagnetic baryon observables is briefly discussed.

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The categories of this paper are: supr-con
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math