Combined CDF and D0 measurement of WZ and ZZ production in final states with b-tagged jets

TL;DR

This paper reports a combined measurement of WZ and ZZ production cross sections in final states with leptons or neutrinos and heavy flavor jets, using data from the Fermilab Tevatron, confirming Standard Model predictions.

Contribution

It provides the first combined measurement of WZ and ZZ production in these specific final states at the Tevatron, utilizing data from both CDF and D0 detectors.

Findings

Measured combined WZ and ZZ cross section: 4.47 pb

Result is consistent with Standard Model predictions

Achieved a significance of 4.6 standard deviations

Abstract

We present a combined measurement of the production cross section of VZ (V=W or Z) events in final states containing charged leptons (electrons or muons) or neutrinos, and heavy flavor jets, using data collected by the CDF and D0 detectors at the Fermilab Tevatron Collider. The analyzed samples of ppbar collisions at sqrt(s)=1.96 TeV correspond to integrated luminosities of 7.5 - 9.5 fb-1. Assuming the ratio of the production cross sections sigma(WZ) and sigma(ZZ) as predicted by the standard model, we measure the sum of the WZ and ZZ cross sections to be 4.47 +- 0.64 (stat) +0.73 -0.72 (syst) pb. This is consistent with the standard model prediction and corresponds to a significance of 4.6 standard deviations above the background-only hypothesis.