Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: INITIAL-STATE COLOUR DIPOLE EMISSION ASSOCIATED WITH QCD POMERON
  EXCHANGE   The initial-state radiation of soft colour dipoles produced together with a
single QCD Pomeron exchange (BFKL) in onium-onium scattering is calculated in
the framework of Mueller's approach. The resulting dipole production grows with
increasing energy and reveals an unexpected feature of a power-law tail at
appreciably large transverse distances from the collision axis, this phenomenon
being related to the scale-invariant structure of dipole-dipole correlations.

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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con