Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP Violation in radiative Z Decays   We propose to test the CP symmetry in the reactions Z -> mu+ mu- gamma and Z
-> tau+ tau- gamma. The experimental analysis of angular correlations allows to
determine a set of effective couplings: the electric and weak dipole moments of
the muon and the tau lepton, and in particular chirality conserving 4-particle
couplings, all of which can be induced by CP--violation in renormalizable
theories of electroweak interactions beyond the Standard Model. We update an
indirect bound on the weak dipole moment of the muon.

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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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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: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: physics