Measurement of the $ZZ$ Production Cross Section in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
(2011) Physical review D — Vol. 84 (2011)
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- We present a new measurement of the production cross section $\sigma(p\bar{p} \rightarrow ZZ)$ at a center-of-mass energy $\sqrt{s}=1.96$ TeV, obtained from the analysis of the four charged lepton final state $\ell^{+}\ell^{-}\ell^{'+} \ell^{'-}$ ($\ell$, $\ell^{'}$ = $e$ or $\mu$). We observe ten candidate events with an expected background of $0.37 \pm 0.13$ events. The measured cross section $\sigma(p\bar{p} \to ZZ)= 1.26^{+0.47}_{-0.37} \mathrm{(stat)} \pm 0.14 \mathrm{(syst)}$ pb is in agreement with NLO QCD predictions. This result is combined with a previous result from the $ZZ\to\ell^{+}\ell^{-}\nu\bar{\nu}$ channel resulting in a combined cross section of $\sigma(p\bar{p} \to ZZ)= 1.40^{+0.43}_{-0.37} \mathrm{(stat)} \pm 0.14 \mathrm{(syst)}$ pb.
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Tanasijczuk, A. J., D0, & et al. (2011). Measurement of the $ZZ$ Production Cross Section in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV. Physical review D, 84. https://doi.org/10.1103/PhysRevD.84.011103 (Original work published 2011)