Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The role of the quark and gluon GPDs in hard vector-meson
  electroproduction   Electroproduction of light vector mesons is analyzed on the basis of handbag
factorization. The required generalized parton distributions are constructed
from the CTEQ6 parton distributions with the help of double distributions. The
partonic subprocesses are calculated within the modified perturbative approach.
The present work extends our previous analysis of the longitudinal cross
section to the transverse one and other observables related to both the
corresponding amplitudes. Our results are compared to recent experimental
findings in detail.

32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga