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

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.
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http://hal.in2p3.fr/in2p3-00664198
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, January 30, 2012 - 9:24:49 AM
Last modification on : Wednesday, September 16, 2020 - 4:23:38 PM

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V.M. Abazov, H. Li, G. Sajot, J. Stark, S. Greder, et al.. A measurement of the WZ and ZZ production cross sections using leptonic final states in 8.6 fb$^{-1}$ of $p\bar{p}$ collisions. Physical Review D, American Physical Society, 2012, 85, pp.112005. ⟨10.1103/PhysRevD.85.112005⟩. ⟨in2p3-00664198⟩

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