Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First moments of the nucleon generalized parton distributions from
  lattice QCD   We report on our lattice calculations of the nucleon's generalized parton
distributions (GPDs), concentrating on their first moments for the case of
N_f=2. Due to recent progress on the numerical side we are able to present
results for the generalized form factors at pion masses as low as 260 MeV. We
perform a fit to one-loop covariant baryon chiral perturbation theory with
encouraging results.

19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th