Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The QCD form factor of massive quarks and applications   We review the electromagnetic form factor of heavy quarks with emphasis on
the QCD radiative corrections at two-loop order in the perturbative expansion.
We discuss important properties of the heavy-quark form factor such as its
exponentiation in the high-energy limit and its role in QCD factorization
theorems for massive n-parton amplitudes.

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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: math
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th