Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-07-25
Phys.Rev.D80:053012,2009
Physics
High Energy Physics
High Energy Physics - Experiment
14 pages, 7 figures, published in Phys. Rev. D, updated to published version
Scientific paper
10.1103/PhysRevD.80.053012
We present a direct measurement of trilinear gauge boson couplings at gammaWW and ZWW vertices in WW and WZ events produced in pp-bar collisions at sqrt{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 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_{gamma}=1.07^{+0.26}_{-0.29}, lambda =0.00^{+0.06}_{-0.06} and g_{1}^{Z}=1.04^{+0.09}_{-0.09} in a scenario respecting SU(2)_L x U(1)_Y gauge symmetry and kappa =1.04^{+0.11}_{-0.11} and lambda=0.00^{+0.06}_{-0.06} in an "equal couplings" scenario.
Abazov V.
The D0 Collaboration
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