Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of interference effects in the search for flavour-changing neutral
  current interactions involving the top quark and a photon or a $Z$ boson at
  the LHC   Flavour-changing neutral-current interactions of the top quark can be
searched for in top-quark pair production with one top quark decaying to an
up-type quark and a neutral boson, and they can be searched for in the single
production of a top quark in association with such a boson. Both processes
interfere if an additional up-type quark is produced in the case of single
production. The impact of these interference effects on searches for
flavour-changing neutral currents at the LHC is studied for the case where the
neutral boson is a photon or a $Z$ boson. Interference effects are found to be
smaller than variations of the renormalisation and factorisation scales.

29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ