Measurement of triple gauge boson couplings from W+W- production at √s = 172GeV

The OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We present measurements of triple gauge boson coupling parameters using data recorded by the OPAL detector at LEP2 at a centre-of-mass energy of 172 GeV. A total of 120 W-pair candidates has been selected in the qq̄qq̄, qq̄ℓv̄ and ℓv̄ℓ̄′vℓ′ decay channels, for an integrated luminosity of 10.4 pb-1. We use these data to determine several different anomalous coupling parameters using the measured cross-section and the distributions of kinematic variables. We measure αΒφ=0.35 +1.29-1.07 ± 0.38, α=0.00+0.30-0.28 ± 0.11, αW = 0.18+0.49-0.47 ± 0.23, Δgz1=-0.03+0.40-0.37 ± 0.14, Δκ(H1SZ)γ = 0.03+0.55-0.51 ± 0.20, and Δκ=0.03+0.49-0.46 ± 0.21. Combining the α result with our previous result obtained from the 161 GeV data sample we measure α=-0.08+0.28-0.25 ± 0.10. All of these measurements are consistent with the Standard Model.

Original languageEnglish
Pages (from-to)597-606
Number of pages10
JournalEuropean Physical Journal C
Issue number4
StatePublished - 1 Jan 1998
Externally publishedYes

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)


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