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
Name
Aad-2012-Measurement of the ZZ Production Cross.pdf
Size
343.19 KB
Format
Adobe PDF
Checksum (MD5)
8801c7bf528efdaf18ba05413f3f5efa
Author(s)
Taylor, Frank E.
Date Issued
January 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aad, G. et al. (ATLAS Collaboration).“Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at Sqrt[s]=7 TeV with the ATLAS Detector.” Physical Review Letters 108.4 (2012):[18 pages].
Version
Final published version
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)-0.3+0.4(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 σZZ→ℓ+ℓ-ℓ+ℓ-fid=19.4-5.2+6.3(stat)-0.7+0.9(syst)±0.7(lumi) fb. The resulting total cross section for on-shell ZZ production, σZZtot=8.5-2.3+2.7(stat)-0.3+0.4(syst)±0.3(lumi) pb, is consistent with the standard model expectation of 6.5-0.2+0.3 pb calculated at the next-to-leading order in QCD. Limits on anomalous neutral triple gauge boson couplings are derived.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.041804
