Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fragmentation in DIS   The fragmentation properties in deep-inelastic scattering (DIS) at HERA are
investigated in order to test perturbative QCD and quark fragmentation
universality. Selected results for the inclusive single particle distributions
and the angular two-particle correlations in the current region of the Breit
frame are presented and compared to results from $e^{+}e^{-}$ collisions. The
extension of the DIS fragmentation studies to the target region of the Breit
frame are also reported.

27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
2
The categories of this paper are: math