Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The neutron negative central charge density: an inclusive-exclusive
  connection   Models of generalized parton distributions at zero skewness are used to
relate the behavior of deep inelastic scattering quark distributions, evaluated
at high x, to the transverse charge density evaluated at small distances. We
obtain an interpretation of the recently obtained negative central charge
density of the neutron. The d quarks dominate the neutron structure function
for large values of Bjorken x, where the large momentum of the struck quark has
a significant impact on determining the center of momentum, and thus the
``center'' of the nucleon in the transverse position plane.

14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess