Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution Kernels from Splitting Amplitudes   We recalculate the next-to-leading order Altarelli-Parisi kernel using a
method which relates it to the splitting amplitudes describing the collinear
factorization properties of scattering amplitudes. The method breaks up the
calculation of the kernel into individual pieces which have an independent
physical interpretation.

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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: eess