Search for $W$ boson pair production in $p\bar{p}$ collisions at $\sqrt{s}~=~1.8~$~TeV

TL;DR

This paper reports a search for $W$ boson pair production in proton-antiproton collisions at 1.8 TeV, observing one event against background expectations, and sets limits on anomalous gauge boson couplings.

Contribution

It provides the first experimental limits on anomalous $WWZ$ and $WW\gamma$ couplings at this energy level using dilepton decay channels.

Findings

Observed one event with expected background of 0.56 events.

Set limits on anomalous coupling parameters: -2.6<Δκ<2.8 and -2.2<λ<2.2.

Constrained gauge boson self-interactions at TeV energies.

Abstract

The results of a search for $W$ boson pair production in $p\bar{p}$ collisions at $\sqrt{s}=1.8$ TeV with subsequent decay to dilepton ($e\mu, ee $, and $\mu\mu$) channels are presented. One event is observed with an expected background of $0.56\pm0.13$ events with an integrated luminosity of approximately 14 pb$^{-1}$. %$13.9\pm1.7$ pb$^{-1}$. Assuming equal strengths for the $WWZ$ and $WW\gamma$ gauge boson coupling parameters $\kappa$ and $\lambda$, limits on the CP-conserving anomalous coupling constants are $-2.6<\Delta\kappa<2.8$ and $-2.2<\lambda<2.2$ at the 95% confidence level.