Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP-odd A^0 production at e^+e^- colliders in MSSM with CP violating
  phases   We study the production of a heavy CP-odd $A^0$ boson in association with a
photon $e^+e^-\to A^0\gamma$ and a Z boson $e^+e^-\to A^0 Z$ as well as the
single production of $A^0$ via $e^+e^- \to \nu_e\bar{\nu}_e A^0$ in the MSSM
with CP violating phases. In the case of $e^+e^-\to A^0\gamma / A^0 Z$, we show
that the squark contribution, which vanishes in the MSSM with real parameters,
turns out to be sizeable in presence of CP violating phases in the soft SUSY
parameters. For $e^+e^- \to \nu_e \bar{\nu}_e A^0$ in both the 2HDM and MSSM
with real parameters, the cross section does not reach observable rates at a
NLC. It is found that with a large CP violating phase for $A_t$, cross sections
of the order 0.1 fb are attainable for all the processes $e^+e^-\to A^0\gamma$,
$e^+e^-\to A^0 Z$ and $e^+e^- \to \nu_e \bar{\nu}_e A^0$.

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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: nlin
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex