Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NLO Conformal Symmetry in the Regge Limit of QCD   We show that a scale invariant approximation to the next-to-leading order
BFKL kernel, constructed via transverse momentum diagrams, has a simple
conformally invariant representation in impact parameter space i.e.
K(r1,r2,r1',r2') = g^4 N^2 ln^4[(|r1-r1'||r2-r2'|)/(|r1-r2'||r2-r1'|)] That a
conformally invariant representation exists is shown first by relating the
kernel directly to Feynman diagrams contributing to two photon diffractive
dissociation.

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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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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: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th