Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The quark and gluon form factors to three loops in QCD through to
  O(eps^2)   We give explicit formulae for the O(eps) and O(eps^2) contributions to the
unrenormalised three loop QCD corrections to quark and gluon form factors.
These contributions have at most transcendentality weight eight. The O(eps)
terms of the three-loop form factors are required for the extraction of the
four-loop quark and gluon collinear anomalous dimensions. The O(eps^2) terms
represent an irreducible contribution to the finite part of the form factors at
four-loops. For the sake of completeness, we also give the contributions to the
one and two loop form factors to the same transcendentality weight eight.

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The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin