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Article
Report number arXiv:1211.6096 ; CERN-PH-EP-2012-318 ; CERN-PH-EP-2012-318
Title Measurement of ZZ production in pp collisions at s=7 TeV and limits on anomalous ZZZ and ZZγ couplings with the ATLAS detector
Related titleMeasurement of ZZ production in pp collisions at sqrt(s)=7 TeV and limits on anomalous ZZZ and ZZgamma couplings with the ATLAS detector
Author(s) ATLAS Collaboration  Показать всех 2900 авторов
Publication 2013-03-21
Imprint 27 Nov 2012
Number of pages 30
Note Comments: 30 pages plus author list (47 pages total), 13 figures, 9 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-02/
30 pages plus author list (47 pages total), 13 figures, 9 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-02/
In: JHEP 03 (2013) 128
DOI 10.1007/JHEP03(2013)128
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords electroweak interaction ; lepton production ; experimental results
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 ZZl+ll+l and ZZl+lνν¯ 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, σZZtot = 6.7 +-0.7 +0.4-0.3 +-0.3 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.
Copyright/License preprint: © 2012-2024 CERN (License: CC-BY-3.0)
publication: © 2013-2024 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: tony.doyle@glasgow.ac.uk


 Запись создана 2012-11-27, последняя модификация 2024-03-14


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