Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP Violation Beyond the Standard Model and Tau Pair Production in $e^+
  e^-$ Collisions   We show that the CP-violating dipole form factors of the tau lepton can be of
the order of $\alpha/\pi$ in units of the length scale set by the inverse $Z$
boson mass. We propose a few observables which are sensitive to these form
factors at LEP2 and higher e^+e^- collision energies.

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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
4
The categories of this paper are: cond-mat
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph