Limits on Anomalous Triple Gauge Couplings in ppbar Collisions at sqrt{s}=1.96 TeV

TL;DR

This paper searches for anomalous triple gauge couplings in WW and WZ production at the Tevatron, setting limits on deviations from the Standard Model using collision data and combining with previous measurements.

Contribution

It provides the first limits on ATGC in WW and WZ production at Tevatron energies, improving constraints by combining multiple channels and previous results.

Findings

ATGC limits of -0.18 < lambda < 0.17 and -0.46 < Delta kappa < 0.39 at 95% CL

Data sample of 350 pb-1 collected with CDF II detector

Combined analysis with Wgamma measurements enhances sensitivity.

Abstract

We present a search for anomalous triple gauge couplings (ATGC) in WW and WZ boson production. The boson pairs are produced in ppbar collisions at sqrt{s}=1.96 TeV, and the data sample corresponds to 350 pb-1 of integrated luminosity collected with the CDF II detector at the Fermilab Tevatron. In this search one W decays to leptons, and the other boson (W or Z) decays hadronically. Combining with a previously published CDF measurement of Wgamma boson production yields ATGC limits of -0.18 < lambda < 0.17 and -0.46 < Delta kappa < 0.39 at the 95% confidence level, using a cut-off scale Lambda=1.5 TeV.