Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NNLO results for heavy quark and direct photon production near threshold   I present some results for the next-to-next-to-leading order expansions of
the resummed cross sections for heavy quark and direct photon production near
threshold in hadronic collisions.

34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys