| Resumen |
We present a direct measurement of trilinear gauge boson couplings at γWW and ZWW vertices in WW and WZ events produced in pp̄ collisions at √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 γWW and ZWW
vertices, we measure these couplings at 68% C.L. to be
κγ =1.07 +0.26 −0.29, λ=0.00 +0.06 −0.06, and
g Z 1 =1.04 +0.09 −0.09 in a scenario respecting SU(2) L ⊗U(1) Y gauge symmetry and κ=1.04 +0.11 −0.11 and λ=0.00
+0.06 −0.06 in an “equal couplings” scenario. |
