Measurement of the WZ→ℓνℓℓ cross section and limits on anomalous triple gauge couplings in pp- collisions at s=1.96 TeV

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Abstract

We present a new measurement of the WZ→ℓνℓℓ (ℓ=e,μ) cross section and limits on anomalous triple gauge couplings. Using 4.1 fb -1 of integrated luminosity of pp- collisions at s=1.96 TeV, we observe 34 WZ candidate events with an estimated background of 6.0±0.4 events. We measure the WZ production cross section to be 3.89-0.90+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 and -0.029<ΔκZ<0.080 in the HISZ parameterization for a Λ=2 TeV form factor scale. These are the best limits to date obtained from the direct measurement of the WWZ vertex. © 2010 Elsevier B.V.

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Abazov, V. M., Abbott, B., Abolins, M., Acharya, B. S., Adams, M., Adams, T., … Zivkovic, L. (2011). Measurement of the WZ→ℓνℓℓ cross section and limits on anomalous triple gauge couplings in pp- collisions at s=1.96 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 695(1–4), 67–73. https://doi.org/10.1016/j.physletb.2010.10.047

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