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Article overview
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Measurement of the ZZ production cross section in p-pbar collisions at sqrt(s)=1.96 TeV | D0 Collaboration
; V. Abazov
; | Date: |
15 Apr 2011 | Abstract: | We present a new measurement of the production cross section $sigma(par{p}
ightarrow ZZ)$ 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 $sigma(par{p} o ZZ)= 1.26^{+0.47}_{-0.37} mathrm{(stat)} pm 0.14
mathrm{(syst)}$ pb is in agreement with NLO QCD predictions. This result is
combined with a previous result from the $ZZ oell^{+}ell^{-}
uar{
u}$
channel resulting in a combined cross section of $sigma(par{p} o ZZ)=
1.40^{+0.43}_{-0.37} mathrm{(stat)} pm 0.14 mathrm{(syst)}$ pb. | Source: | arXiv, 1104.3078 | Services: | Forum | Review | PDF | Favorites |
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