Studies of gauge boson pair production and trilinear couplings

Abstract

The gauge boson pair production processes Wg, WW, WZ, and Zg were studied\nusing pbarp collisions corresponding to an integrated luminosity of ~14 pb-1 at\na center-of-mass energy of sqrt(s) = 1.8 TeV. Analysis of Wg prod with\nsubsequent W boson decay to lv (l=e,mu) is reported, including a fit to the pT\nspectrum of the photons which leads to limits on anomalous WWg couplings. A\nsearch for WW prod with subsequent decay to l-lbar-v-vbar (l=e,mu) is presented\nleading to an upper limit on the WW prod cross section and limits on anomalous\nWWg and WWZ couplings. A search for high pT W bosons in WW and WZ prod is\ndescribed, where one W boson decays to an ev and the second W boson or the Z\nboson decays to two jets. A maximum likelihood fit to the pT spectrum of W\nbosons resulted in limits on anomalous WWg and WWZ couplings. A combined fit to\nthe three data sets which provided the tightest limits on anomalous WWg and WWZ\ncouplings is also described. Limits on anomalous ZZg and Zgg couplings are\npresented from an analysis of the photon ET spectrum in Zg events in the decay\nchannels (ee, mu-mu, and v-vbar) of the Z boson.\n