Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-loop QCD and electroweak corrections to $t\bar{t}Z^0$ production at
  an $e^+e^-$ linear collider   We study the impact of the full ${\cal O}(\alpha_{s})$ QCD and ${\cal
O}(\alpha_{ew})$ electroweak (EW) radiative corrections to the $e^+e^- \to t
\bar t Z^0$ process in the standard model (SM), and investigate the dependence
of the lowest-order(LO), one-loop QCD and EW corrected cross sections on
colliding energy $\sqrt{s}$. The LO, QCD and EW corrected spectrums of the
invariant mass of $t\bar t$-pair and the distributions of the transverse
momenta of final top-quark and $Z^0$-boson are presented. The numerical results
show that the one-loop QCD correction enhances the LO cross section, but the EW
one-loop correction generally suppresses the LO cross section with our chosen
parameters. In the case of $m_H=120 GeV$, the QCD relative corrections can
reach 43.16% when $\sqrt{s} = 500 GeV$, while the EW relative corrections have
the values of -9.24%, -4.36% and -5.81%, when $\sqrt{s} = 500 GeV$, $800 GeV$,
1.2 TeV$, respectively.

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The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
1
The categories of this paper are: cs
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
16
The categories of this paper are: stat