Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: GPDs, form factors and Compton scattering   The basic theoretical ideas of the handbag factorization and its application
to wide-angle scattering reactions are reviewed. With regard to the present
experimental program carried out at JLab, wide-angle Compton scattering is
discussed in some detail.

15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th