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Measurement of the pp¯WZ+X cross section at s=1.96TeV and limits on WWZ trilinear gauge couplings

V. M. Abazov et al. (D0 Collaboration)
Phys. Rev. D 76, 111104(R) – Published 28 December 2007

Abstract

We present measurements of the process pp¯WZ+Xν¯ at s=1.96TeV, where and are electrons or muons. Using 1fb1 of data from the D0 experiment, we observe 13 candidates with an expected background of 4.5±0.6 events and measure a cross section σ(WZ)=2.71.3+1.7pb. From the number of observed events and the Z boson transverse momentum distribution, we limit the trilinear WWZ gauge couplings to 0.17λZ0.21(ΔκZ=0) at the 95% C.L. for a form factor scale Λ=2TeV. Further, assuming that Δg1Z=ΔκZ, we find 0.12ΔκZ0.29(λZ=0) at the 95% C.L. These are the most restrictive limits on the WWZ couplings available to date.

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  • Received 20 September 2007

DOI:https://doi.org/10.1103/PhysRevD.76.111104

©2007 American Physical Society

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Vol. 76, Iss. 11 — 1 December 2007

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