Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High energy single top photoproduction at the LHC   High-energy photon-proton interactions at the LHC offer interesting
possibilities for the study of top properties. Using a fast simulation of a
LHC-like detector, first results on the measurement of the |V_{tb}| matrix
element using Wt photoproduction are presented. Anomalous photoproduction of
single top due to Flavour-Changing Neutral Currents permits to improve the
current limits on the coupling parameters, k_{tu\gamma} and k_{tc\gamma} after
only 1 fb^{-1}.

14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ