Studies of WW and WZ Production and Limits on Anomalous WWgamma and WWZ Couplings

TL;DR

This study searched for anomalous WW and WZ production in proton-antiproton collisions at 1.8 TeV, finding no evidence and setting limits on anomalous couplings at 95% confidence level.

Contribution

It provides new experimental limits on anomalous WWgamma and WWZ couplings using data from proton-antiproton collisions at 1.8 TeV.

Findings

No evidence of anomalous diboson production was observed.

Established 95% confidence level limits on anomalous couplings.

Combined results with previous data to improve constraints.

Abstract

Evidence of anomalous WW and WZ production was sought in pbar{p} collisions at a center-of-mass energy of sqrt(s) = 1.8 TeV. The final states $WW (WZ) to mu-nu-jet-jet + X, WZ to mu-nu-e-e + X and WZ to e-nu-e-e + X were studied using a data sample corresponding to an integrated luminosity of approximately 90 pb-1. No evidence of anomalous diboson production was found. Limits were set on anomalous WWgamma and WWZ couplings and were combined with our previous results. The combined 95% confidence level anomalous coupling limits for Lambda=2 TeV are -0.25 LE Delta-kappa LE 0.39 (lambda=0) and -0.18 LE lambda LE 0.19 (Delta \kappa = 0), assuming the WWgamma couplings are equal to the WWZ couplings.