Limits onWWZandWWγCouplings fromWWandWZProduction inpp¯Collisions at√s=1.8TeV

Direct limits are set on $\mathrm{WWZ}$ and $\mathrm{WW}\gamma$ three-boson couplings in a search for $\mathrm{WW}$ and $\mathrm{WZ}$ production with high transverse momentum in $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}$ TeV, using the Collider Detector at Fermilab. The results are in agreement with the SU(2) $\times$ U(1) model of electroweak interactions. Assuming standard model $\mathrm{WW}\gamma$ couplings, the limits are interpreted as direct evidence for a nonzero $\mathrm{WWZ}$ coupling at subprocess energies near 500 GeV. Alternatively, assuming identical $\mathrm{WWZ}$ and $\mathrm{WW}\gamma$ couplings, bounds $-0.11<\kappa <2.27\mathrm{}$ and $-0.81<\lambda <0.84\mathrm{}$ are obtained at 95% C.L. for a form factor scale 1000 GeV.