Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NLO QCD procedure of the semi-inclusive deep inelastic scattering data
  analysis with respect to the light quark polarized sea   The semi-inclusive deep inelastic scattering (SIDIS) process is considered. A
theoretical procedure is proposed allowing the direct extraction from the SIDIS
data of the first moments of the polarized valence distributions and of the
first moment difference of the light sea quark polarized distributions in the
next to leading QCD order. The validity of the procedure is confirmed by the
respective simulations.

12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph