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Measurement of triple gauge boson couplings from W+W- production at LEP energies up to 189 GeV

Research output: Contribution to journalJournal article

Published

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  • OPAL Collaboration
Journal publication date02/2001
JournalEuropean Physical Journal C: Particles and Fields
Journal number1
Volume19
Number of pages14
Pages1-14
Original languageEnglish

Abstract

A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPAL detector at LEP during 1998 at a centre-of-mass energy of 189 GeV with an integrated luminosity of 183 pb(-1). After combining with our previous measurements at centre-of-mass energies of 161-183 GeV we obtain kappa = 0.97(-0.16)(+0.20), g(1)(z) = 0.991(-0.057)(+0.060) and lambda = -0.110(-0.055)(+0.058), where the errors include both statistical and systematic uncertainties and each coupling is determined by setting the other two couplings to their Standard Model values. These results are consistent with the Standard Model expectations.