| Resumen |
We present a new measurement of the WZ→ℓνℓℓWZ→ℓνℓℓ (ℓ=e,μℓ=e,μ) cross section and limits on anomalous triple gauge couplings. Using 4.1 fb−1 of integrated luminosity of View the MathML sourcepp¯ collisions at View the MathML sources=1.96 TeV, we observe 34 WZ candidate events with an estimated background of 6.0±0.46.0±0.4 events. We measure the WZ production cross section to be View the MathML source3.89−0.90+1.07 pb, in good agreement with the standard model prediction. We find no evidence for anomalous WWZ couplings and set 95% C.L. limits on the coupling parameters, −0.077<λZ<0.093−0.077<λZ<0.093 and −0.029<ΔκZ<0.080−0.029<ΔκZ<0.080 in the HISZ parameterization for a Λ=2 TeVΛ=2 TeV form factor scale. These are the best limits to date obtained from the direct measurement of the WWZ vertex. |
