Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of the neutron structure function via semi-inclusive deep
  inelastic electron scattering off the deuteron   The production of slow nucleons in semi-inclusive deep inelastic electron
scattering off the deuteron is investigated in the region $x \gsim 0.3$ for
kinematical conditions accessible at $HERA$. Within the spectator mechanism the
semi-inclusive cross section exhibits a scaling property, which can be used as
a model-independent test of the dominance of the spectator mechanism itself,
providing in this way an interesting tool to investigate the neutron structure
function. The possibility of extracting model-independent information on the
neutron to proton structure function ratio from semi-inclusive experiments is
also illustrated.

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The categories of this paper are: q-alg
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph