en
Scientific article
Open access
English

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

ContributorsATLAS Collaboration
Published inPhysical review letters, vol. 108, no. 04, 041804
Publication date2012
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.

Citation (ISO format)
ATLAS Collaboration. 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. In: Physical review letters, 2012, vol. 108, n° 04, p. 041804. doi: 10.1103/PhysRevLett.108.041804
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0031-9007
505views
215downloads

Technical informations

Creation09/18/2014 4:50:00 PM
First validation09/18/2014 4:50:00 PM
Update time03/14/2023 9:46:53 PM
Status update03/14/2023 9:46:53 PM
Last indexation05/08/2024 6:25:51 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack