Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of Charged Particle Spectra in Deep-Inelastic ep Scattering
  at HERA   Charged particle production in deep-inelastic ep scattering is measured with
the H1 detector at HERA. The kinematic range of the analysis covers low photon
virtualities, 5 < Q^2 < 100 GeV^2, and small values of Bjorken-x, 10^{-4} < x <
10^{-2}. The analysis is performed in the hadronic centre-of-mass system. The
charged particle densities are measured as a function of pseudorapidity (eta^*)
and transverse momentum (p_T^*) in the range 0< \eta^* < 5 and 0< p_T^* < 10$
GeV differentially in x and Q^2. The data are compared to predictions from
different Monte Carlo generators implementing various options for hadronisation
and parton evolutions.

17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th