Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: KK-number non-conserving decays: Signal of n = 2 excitations of
  Extra-Dimensional Models at the LHC   In the simplest universal extra-dimension models Kaluza-Klein (KK) parity
distinguishes the states with odd and even KK-number. We calculate the coupling
of a 2n-level top quark to a top quark and the Higgs scalar (both n = 0
states), absent at the tree level, which is mediated by strong interactions at
one-loop. We show that the strength of this coupling is independent of n. We
observe that the decay due to this coupling, which conserves KK-parity, can be
a few per cent of the phase space suppressed decay to two n-level states which
proceeds through tree-level couplings. We explore the prospects of verification
of this result at the Large Hadron Collider through the production of an n = 2
KK top-antitop pair both of which subsequently decay to a zero mode top
quark/antiquark and a Higgs boson.

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The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: econ
10
The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg