Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The handbag mechanism in wide-angle exclusive reactions   The handbag mechanism for wide-angle exclusive scattering reactions is
discussed and compared with other theoretical approaches. Its application to
Compton scattering, meson photoproduction and two-photon annihilations into
pairs of hadrons is reviewed in some detail.

1
The categories of this paper are: cs
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom