Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101681
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Type: Journal article
Title: Measurement of the ZZ production cross section and limits on anomalous neutral triple gauge couplings in proton-proton collisions at √s = 7 TeV with the ATLAS detector
Other Titles: Measurement of the ZZ production cross section and limits on anomalous neutral triple gauge couplings in proton-proton collisions at root s = 7 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physical Review Letters, 2012; 108(4):041804-1-041804-18
Publisher: American Physical Society
Issue Date: 2012
ISSN: 1079-7114
1079-7114
Statement of
Responsibility: 
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M. J. White ... et al. (ATLAS Collaboration)
Abstract: A measurement of the ZZ production cross section in proton-proton collisions at s√=7  TeV using data corresponding to an integrated luminosity of 1.02  fb⁻¹ recorded by the ATLAS experiment at the LHC is presented. Twelve events containing two Z boson candidates decaying to electrons and/or muons are observed, with an expected background of 0.3±0.3(stat)+0.4−0.3(syst) events. The cross section measured in a phase-space region with good detector acceptance and for dilepton masses within the range 66 to 116 GeV is σfidZZ→ℓ⁺ℓ⁻ℓ⁺ℓ⁻=19.4+6.3−5.2(stat)+0.9−0.7(syst)±0.7(lumi)  fb. The resulting total cross section for on-shell ZZ production, σtotZZ=8.5+2.7−2.3(stat)+0.4−0.3(syst)±0.3(lumi)  pb, is consistent with the standard model expectation of 6.5+0.3−0.2  pb calculated at the next-to-leading order in QCD. Limits on anomalous neutral triple gauge boson couplings are derived.
Keywords: ATLAS Collaboration; ATLAS Collaboration; ATLAS Collaboration
Rights: © 2012 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0020132844
DOI: 10.1103/PhysRevLett.108.041804
Appears in Collections:Physics publications

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