Search for new resonances decaying via WZ to leptons in proton-proton collisions at sqrt(s) = 8 TeV

TL;DR

This paper searches for new particles decaying into WZ bosons in proton-proton collisions at 8 TeV, setting limits on their production and coupling strengths, with no significant signals found.

Contribution

It provides the first experimental limits on W' boson production and WZ coupling at 8 TeV, constraining extended gauge and technicolor models.

Findings

Excluded W' boson masses below 1.47 TeV

Set upper bounds on W'WZ coupling

Constrained technicolor model parameters

Abstract

A search is performed in proton-proton collisions at sqrt(s) = 8 TeV for exotic particles decaying via WZ to fully leptonic final states with electrons, muons, and neutrinos. The data set corresponds to an integrated luminosity of 19.5 inverse femtobarns. No significant excess is observed above the expected standard model background. Upper bounds at 95% confidence level are set on the production cross section of a W' boson as predicted by an extended gauge model, and on the W'WZ coupling. The expected and observed mass limits for a W' boson, as predicted by this model, are 1.55 and 1.47 TeV, respectively. Stringent limits are also set in the context of low-scale technicolor models under a range of assumptions for the model parameters.