Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A QCD analysis of ZEUS diffractive data   ZEUS inclusive diffractive cross-section measurements have been used in a
next-to-leading-order QCD analysis to extract the diffractive parton
distribution functions. Data on diffractive dijet production in deep inelastic
scattering have also been used to constrain the gluon density. Predictions
based on the extracted parton densities are able to describe measurements of
dijet photoproduction.

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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: stat
24
The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas