Journal article

Measurement of charged current triple gauge boson couplings using W pairs at LEP

G Abbiendi, C Ainsley, PF Akesson, G Alexander, J Allison, P Amaral, G Anagnostou, KJ Anderson, S Arcelli, S Asai, D Axen, G Azuelos, I Bailey, E Barberio, RJ Barlow, RJ Batley, P Bechtle, T Behnke, KW Bell, PJ Bell Show all



Triple gauge boson couplings axe 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)×U(1) relations are used, resulting in four independent couplings, κγ, g1z, λγ and g5z. Determining each coupling in a separate fit, assuming the other couplings to take their Standard Model values, we obtain κγ,=0.88-0.08+0.09, g1z=0.987-0.033+0.034, A7=-0.060lg:g|J and g5z=-0.04 -0.12+0.13, where the errors include both statistical and systematic uncertainties. Fits are also performed allowing some of the couplings to vary simultaneously. All results ..

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University of Melbourne Researchers