Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: GPD phenomenology and DVCS fitting - Entering the high-precision era   We review the phenomenological framework for accessing Generalized Parton
Distributions (GPDs) using measurements of Deeply Virtual Compton Scattering
(DVCS) from a proton target. We describe various GPD models and fitting
procedures, emphasizing specific challenges posed both by the internal
structure and properties of the GPD functions and by their relation to
observables. Bearing in mind forthcoming data of unprecedented accuracy, we
give a set of recommendations to better define the pathway for a precise
extraction of GPDs from experiment.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
1
The categories of this paper are: cs
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys