Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101911
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Type: Journal article
Title: Measurement of ZZ production in pp collisions at √s = 7 TeV and limits on anomalous ZZZ and ZZγ couplings with the ATLAS detector
Other Titles: Measurement of ZZ production in pp collisions at root s =7 TeV and limits on anomalous ZZZ and ZZgamma couplings with the ATLAS detector
Author: The ATLAS Collaboration
Aad, G.
Citation: Journal of High Energy Physics, 2013; 2013(3):128-1-128-47
Publisher: Springer
Issue Date: 2013
ISSN: 1126-6708
1029-8479
Statement of
Responsibility: 
G. Aad … P. Jackson … L. Lee … A Petridis … N. Soni … M.J. White … et al. [The ATLAS Collaboration]
Abstract: A measurement of the ZZ production cross section in proton-proton collisions at s√=7 TeV using data recorded by the ATLAS experiment at the Large Hadron Collider is presented. In a data sample corresponding to an integrated luminosity of 4.6 fb−1 collected in 2011, events are selected that are consistent either with two Z bosons decaying to electrons or muons or with one Z boson decaying to electrons or muons and a second Z boson decaying to neutrinos. The ZZ(*) → ℓ+ℓ−ℓ′+ℓ′− and ZZ→ℓ+ℓ−νν¯¯¯ cross sections are measured in restricted phase-space regions. These results are then used to derive the total cross section for ZZ events produced with both Z bosons in the mass range 66 to 116 GeV, σtotZZ=6.7±0.7(stat.)+0.4−0.3(syst.)±0.3(lumi.) pb, which is consistent with the Standard Model prediction of 5.89+0.22−0.18 pb calculated at next-to-leading order in QCD. The normalized differential cross sections in bins of various kinematic variables are presented. Finally, the differential event yield as a function of the transverse momentum of the leading Z boson is used to set limits on anomalous neutral triple gauge boson couplings in ZZ production.
Keywords: Hadron-hadron scattering
Rights: Open Access, Copyright CERN, for the benefit of the ATLAS collaboration. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
RMID: 0020133435
DOI: 10.1007/JHEP03(2013)128
Appears in Collections:Chemistry and Physics publications

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