A measurement of the WZ and ZZ production cross sections using leptonic final states in 8.6 fb$^{-1}$ of $p\bar{p}$ collisions

TL;DR

This paper reports measurements of WZ and ZZ production cross sections in proton-antiproton collisions at the Tevatron, using leptonic final states and 8.6 fb$^{-1}$ of data, providing results consistent with the Standard Model predictions.

Contribution

First measurement of WZ and ZZ cross sections in leptonic final states at the Tevatron with high integrated luminosity.

Findings

WZ cross section measured as 4.50$^{+0.63}_{-0.66}$ pb

ZZ cross section measured as 1.64 $\pm$ 0.46 pb

Combined ZZ measurement yields 1.44$^{+0.35}_{-0.34}$ pb

Abstract

We study the processes $p\bar{p} \rightarrow WZ \rightarrow \ell\nu\ell^+\ell-$ and $p\bar{p} \rightarrow ZZ \rightarrow \ell^+\ell^-\nu\bar{\nu}, where $\ell$ = $e$ or ${\mu}$. Using 8.6 fb$^{-1} of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron collider, we measure the $WZ$ production cross section to be 4.50$^{+0.63}_{-0.66} pb which is consistent with, but slightly above a prediction of the standard model. The ZZ cross section is measured to be 1.64 $\pm$ 0.46 pb, in agreement with a prediction of the standard model. Combination with an earlier analysis of the $ZZ \rightarrow \ell^+\ell^-\ell^+\ell^-$ channel yields a $ZZ$ cross section of 1.44$^{+0.35}_{-0.34}$ pb.