Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single top quark production through unparticles at photon colliders   We investigate the single top quark production with the exchange of
unparticles through high energy photon-photon collision $\gamma \gamma\to t
\bar c$. The effects of unparticles on the scattering cross sections for
different polarization configurations, and for various values of the scaling
dimension $d, 1<d<2$ are analysed. It is shown that the $(+-)$ polarisation
configuration is more preferable searching for unparticle physics signatures.

4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin