arXiv subjects

The DZero Collaboration

Publications and source records attributed to The DZero Collaboration.

2 recordsLinked to original sources

arXiv1996

Limits on Anomalous $WWγ$ Couplings from $p\bar{p} \to W γ+ X$ Events at $\sqrt{s}=1.8$ TeV

We have measured the $WWγ$ gauge boson coupling parameters using $p\bar{p}\to \ellνγ+X$ ($\ell=e,μ$) events at $\sqrt{s}=1.8$ TeV. The data, corresponding to an integrated luminosity of 89.1 pb^{-1}, were collected using the D0 detector at the Fermilab Tevatron Collider. The measured cross section times branching ratio for $p\bar{p} \to Wγ+X$ with $p_T^γ$ > 10 GeV/c and $R_{\ellγ} > 0.7$ is ${11.8}^{+1.7}_{-1.6} \pm 2.0$ pb, in agreement with the Standard Model prediction. The one degree of freedom 95% confidence level limits on individual CP-conserving parameters are $-0.98<Δκ<1.01$ and $-0.33<λ<0.31$. Similar limits are set on the CP}violating coupling parameters.

hep-ex↗

arXiv1996

Search for Anomalous WW and WZ Production in ppbar Collisions at sqrt(s) = 1.8 TeV

We present results from a search for anomalous WW and WZ production in ppbar collisions at sqrt(s) = 1.8 TeV. We used ppbar->evjjX events observed during the 1992-1993 run of the Fermilab Tevatron collider, corresponding to an integrated luminosity of 13.7 +- 0.7 pb^-1. A fit to the transverse momentum spectrum of the W boson yields direct limits on the CP-conserving anomalous WWgamma and WWZ coupling parameters of -0.9 < delta kappa < 1.1 (with lambda = 0) and -0.6 < lambda < 0.7 (with delta kappa = 0) at the 95% confidence level, for a form factor scale Lambda = 1.5 TeV, assuming that the WWgamma and WWZ coupling parameters are equal.

hep-ex↗