Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cusp and collinear anomalous dimensions in four-loop QCD from form
  factors   We calculate the complete quark and gluon cusp anomalous dimensions in
four-loop massless QCD analytically from first principles. In addition, we
determine the complete matter dependence of the quark and gluon collinear
anomalous dimensions. Our approach is to Laurent expand four-loop quark and
gluon form factors in the parameter of dimensional regularization. We employ
finite field and syzygy techniques to reduce the relevant Feynman integrals to
a basis of finite integrals, and subsequently evaluate the basis integrals
directly from their standard parametric representations.

31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an