Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Higgs Pair Production at the LHC in Models with Universal Extra
  Dimensions   In this letter we study the process of gluon fusion into a pair of Higgs
bosons in a model with one universal extra dimension. We find that the
contributions from the extra top quark Kaluza-Klein excitations lead to a Higgs
pair production cross section at the LHC that can be significantly altered
compared to the Standard Model value for small values of the compactification
scale.

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The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio