First Observation of Vector Boson Pairs in a Hadronic Final State at the Tevatron Collider

TL;DR

This paper reports the first observation of electroweak vector boson pair production in hadronic final states at the Tevatron, confirming Standard Model predictions with experimental data.

Contribution

It provides the first experimental evidence of VV production with one boson decaying hadronically, using data from the Tevatron collider.

Findings

Observation of 1516±239 diboson candidate events

Measured cross section of 18.0±2.8(stat)±2.4(syst)±1.1(lumi) pb

Results are consistent with Standard Model expectations

Abstract

We present the first observation in hadronic collisions of the electroweak production of vector boson pairs (VV, V=W,Z) where one boson decays to a dijet final state . The data correspond to 3.5 inverse femtobarns of integrated luminosity of ppbar collisions at sqrt(s)=1.96 TeV collected by the CDFII detector at the Fermilab Tevatron. We observe 1516+/-239(stat)+/-144(syst) diboson candidate events and measure a cross section sigma(ppbar->VV+X) of 18.0+/-2.8(stat)+/-2.4(syst)+/-1.1(lumi) pb, in agreement with the expectations of the standard model.