Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two photon background for Higgs boson searches at the LHC   The search for an intermediate mass Higgs boson at the LHC needs the
quantitative understanding of the two-photon background. A calculation of
two-photon production in hadronic collisions at full next-to-leading order is
described. It includes photons originating from the hadronization of QCD
partons which play an important role at the LHC. A prediction for the invariant
mass distribution for photon pairs at the LHC is presented and finally the
residual scale dependencies are discussed.

26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
19
The categories of this paper are: eess