Measurement of charged current triple gauge boson couplings using W pairs at LEP
Triple gauge boson couplings are measured from W-pair events recorded by the OPAL detector at LEP at centre-of-mass energies of 183 - 209 GeV with a total integrated luminosity of 680 pb-1. Only CP-conserving couplings are considered and SU(2) x U(1) relations are used, resulting in four independent couplings, and g z 5. Determining each coupling in a separate fit, assuming the other couplings to take their Standard Model values, we obtain , g z 1 = 0.987 + 0.034 -0.033, and g z 5 = -0.04 + 0.13 -0.12, where the errors include both statistical and systematic uncertainties. Fits are also performed allowing some of the couplings to vary simultaneously. All results are consistent with the Standard Model predictions.
© Springer-Verlag, 2004