Measurements of Trilinear Gauge Boson Couplings
Measurements of Trilinear Gauge Boson Couplings

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Published: 2003

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Direct measurements of the trilinear gauge boson couplings by the D0 collaboration at Fermilab are reported. Limits on the anomalous couplings were obtained at a 95% CL from four diboson production processes: W[gamma] production with the W boson decaying to e[nu] or[mu][nu], WW production with both of the W bosons decaying to e[nu] or[mu][nu], WW/WZ production with one W boson decaying to e[nu] and the other W or Z boson decaying to two jets, and Z[gamma] production with the Z boson decaying to ee, [mu][mu], or[nu][nu]. Limits were also obtained from a combined fit to W[gamma], WW[yields] dileptons and WW/WZ[yields] e[nu]jj data samples.

Measurement of Trilinear Gauge Boson Couplings from at {\boldmath$\sqrt{s}
Measurement of Trilinear Gauge Boson Couplings from at {\boldmath$\sqrt{s}

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Published: 2009

Total Pages: 14

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We present a direct measurement of trilinear gauge boson couplings at gammaWW and ZWW vertices in WW and WZ events produced in p{bar p} collisions at (square root)s = 1.96 TeV. We consider events with one electron or muon, missing transverse energy, and at least two jets. The data were collected using the D0 detector and correspond to 1.1 fb−1 of integrated luminosity. Considering two different relations between the couplings at the gammaWW and ZWW vertices, we measure these couplings at 68% C.L. to be kappa{sub gamma} = 1.07{sub -0.29}{sup +0.26}, lambda = 0.00{sub -0.06}{sup +0.06}, and g1{sup Z} = 1.04{sup -0.09}{sup +0.09} in a scenario respecting SU(2){sub L}[direct-product]U(1){sub Y} gauge symmetry and kappa = 1.04{sub -0.11}{sup +0.11} and lambda=0.00{sub -0.06}{sup +0.06} in an 'equal couplings' scenario.

Trilinear Gauge Couplings at the Fermilab Tevatron
Trilinear Gauge Couplings at the Fermilab Tevatron

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Published: 1997

Total Pages: 6

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Recent trilinear gauge boson couplings measurements by the CDF and D0 Collaborations at the Fermilab Tevatron are presented. The measurements were done by analyzing diboson production in multiple decay channels and final states. No deviations from the Standard Model description of the WWZ, WW[gamma], ZZ[gamma] and Z[gamma][gamma] vertices were found. Limits on anomalous gauge couplings set by these analyses are the tightest available to date.

Trilinear Gauge Boson Couplings and Vector Boson Pair Production
Trilinear Gauge Boson Couplings and Vector Boson Pair Production

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Published: 2002

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The trilinear couplings appear as the three gauge boson vertices and can be measured by studying the gauge boson pair production processes. The measurement of the coupling parameters is one of the few remaining crucial tests of the Standard Model. D0 has studied W[gamma], Z[gamma], WW, and WZ production and found no evidence of anomalous production. In this paper we review all the current results from D0 data.