Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Forward-backward asymmetry in e+e- -> nu nubar Z from anomalous CP-odd
  WWZ couplings   Anomalous CP-odd W+W-Z couplings can give rise to a forward-backward
asymmetry in the Z angular distribution in the e+e- centre-of-mass frame in the
process e+e- -> nu nubar Z. Of the three CP-odd couplings possible, only the
imaginary part of one of the couplings, f_4^Z, which is C odd and P even,
contributes to the forward-backward asymmetry. It is found that a limit of the
order of 0.1 can be placed on this coupling at a Next Linear Collider with
centre-of-mass energy of 500 GeV and integrated luminosity of 50 fb^{-1}.

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The categories of this paper are: cs
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin