Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged Particle Production in High Q2 Deep-Inelastic Scattering at HERA   The average charged track multiplicity and the normalised distribution of the
scaled momentum, $\xp$, of charged final state hadrons are measured in
deep-inelastic $\ep$ scattering at high $Q^2$ in the Breit frame of reference.
The analysis covers the range of photon virtuality $100 < Q^2 < 20 000
\GeV^{2}$. Compared with previous results presented by HERA experiments this
analysis has a significantly higher statistical precision and extends the phase
space to higher $Q^{2}$ and to the full range of $\xp$. The results are
compared with $e^+e^-$ annihilation data and with various calculations based on
perturbative QCD using different models of the hadronisation process.

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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math