Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nucleon Structure and Generalized Parton Distributions   This paper discusses a selected part of the experimental program dedicated to
the study of Generalized Parton Distributions, a recently introduced concept
which provides a comprehensive framework for investigations of the partonic
structure of the nucleon. Particular emphasis is put on the Deeply Virtual
Compton Scattering program performed at the Jefferson Laboratory. The short and
long term future of this program is also discussed in the context of the
several experimental efforts aiming at a complete and exhaustive mapping of
Generalized Parton Distributions.

10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph