WW production cross section measurement and limits on anomalous trilinear gauge couplings at center of mass energy = 1.96 TeV
Cooke, Michael P.
Corcoran, Marjorie D.
Doctor of Philosophy
The cross section for WW production is measured and limits on anomalous WWgamma and WWZ trilinear gauge couplings are set using WW → ee/emu/mumu events collected by the Run II DO detector at the Fermilab Tevatron Collider corresponding to 1 fb-1 of integrated luminosity at s = 1.96 TeV. Across the three final states, 108 candidate events are observed with 40.8+/-3.8 total background expected, consistent with sigma( pp → WW) = 11.6 +/- 1.8 (stat) +/- 0.7 (syst) +/- 0.7 (lumi) pb. Using a set of SU(2)L ⊗ U(1) Y conserving constraints, the one-dimensional 95% C.L. limits on trilinear gauge couplings are -0.63 < Deltakappagamma < 0.99, -0.15 < lambdagamma < 0.19, and -0.14 < Delta gZ1 < 0.34.
Particle physics; Elementary particles; High energy physics