Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single Intermediate Vector Boson Production in e+e- collisions at
  sqrt(s) = 183 and 189 GeV   The cross-sections for the production of single charged and neutral
intermediate vector bosons were measured using integrated luminosities of 52
pb^{-1} and 154 pb^{-1} collected by the DELPHI experiment at centre-of-mass
energies of 182.6 GeV and 188.6 GeV, respectively. The cross-sections for the
reactions were determined in limited kinematic regions. The results found are
in agreement with the Standard Model predictions for these channels.

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The categories of this paper are: nlin
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The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: eess