Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cross-sections of large-angle hadron production in proton- and
  pion-nucleus interactions II: beryllium nuclei and beam momenta from +/- 3
  GeV/c to +/-15 GeV/c   We report on double-differential inclusive cross-sections of the production
of secondary protons and charged pions, in the interactions with a 5%
interaction length thick stationary beryllium target, of proton and pion beams
with momentum from +/-3 GeV/c to +/-15 GeV/c. Results are given for secondary
particles with production angles between 20 and 125 degrees.

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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: math
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-th