# Search for WZ+ZZ production with MET + jets with b enhancement at sqrt(s) = 1.96 TeV

Abstract : Diboson production ($WW+WZ+ZZ$) has been observed at the Tevatron in hadronic decay modes dominated by the $WW$ process. This paper describes the measurement of the cross section of $WZ$ and $ZZ$ events in final states with large $\mett$ and using $b$-jet identification as a tool to suppress $WW$ contributions. Due to the limited energy resolution, we cannot distinguish between partially hadronic decays of $WZ$ and $ZZ$, and we measure the sum of these processes. The number of signal events is extracted using a simultaneous fit to the invariant mass distribution of the two jets for events with two $b$-jet candidates and events without two $b$-jet candidates. We measure a cross section $\sigma(p\bar{p}\to WZ,ZZ) = 5.8^{+3.6}_{-3.0}$ pb, in agreement with the standard model.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00617694
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Submitted on : Tuesday, August 30, 2011 - 11:32:25 AM
Last modification on : Thursday, November 18, 2021 - 4:06:05 AM

### Citation

T. Aaltonen, B. Alvarez Gonzalez, S. Amerio, D. Amidei, A. Anastassov, et al.. Search for WZ+ZZ production with MET + jets with b enhancement at sqrt(s) = 1.96 TeV. Physical Review D, American Physical Society, 2012, 85, pp.012002. ⟨10.1103/PhysRevD.85.012002⟩. ⟨in2p3-00617694⟩

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