F. Abe et al., LIMITS ON WWZ AND WW-GAMMA COUPLINGS FROM WW AND WZ PRODUCTION IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV, Physical review letters, 75(6), 1995, pp. 1017-1022
Direct limits are set on WWZ and WW gamma three-boson couplings in a s
earch for WW and WZ production with high transverse momentum in pp col
lisions at root s = 1.8 TeV, using the Collider Detector at Fermilab.
The results are in agreement with the SU(2) X U(1) model of electrowea
k interactions. Assuming standard model WW gamma couplings, the limits
are interpreted as direct evidence for a nonzero WWZ coupling at subp
rocess energies near 500 GeV. Alternatively, assuming identical WWZ an
d WW gamma couplings, bounds -0.11 < kappa < 2.27 and -0.81 < lambda <
0.84 are obtained at 95% C.L. for a form factor scale 1000 GeV.