Bounds on g5 Z from precision LEP measurements

S. Dawson, G. Valencia

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The parity violating but CP conserving anomalous three-gauge-boson coupling g5 Z lnduces a universal contribution to the left-handed coupling of the Z boson to fermions. We find that the LEP measurements of the partial Z widths and lepton forward-backward asymmetries are sufficiently precise to place a bound of order |g5 Z| less than ∼4%. This bound is significantly better than what can be obtained at present from rare K and B meson decays.

Original languageEnglish
Pages (from-to)207-211
Number of pages5
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 28 Jul 1994
Externally publishedYes

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