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
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 σ_(ZZ→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, σ_(ZZ)^(tot)=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.
Additional Information
© 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. Received 23 October 2011; published 25 January 2012. We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular, from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CCIN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwide.Attached Files
Published - Aad2012p17257Phys_Rev_Lett.pdf
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Aad2012p17257Phys_Rev_Lett.pdf
Additional details
Identifiers
- Eprint ID
- 29546
- Resolver ID
- CaltechAUTHORS:20120301-101834796
Funding
- ANPCyT (Argentina)
- YerPhl (Armenia)
- ARC (Australia)
- BMWF (Austria)
- ANAS (Azerbaijan)
- SSTC (Belarus)
- CNPq and FAPESP (Brazil)
- NSERC (Canada)
- NRC and CFI (Canada)
- CERN
- CONICYT (Chile)
- CAS (China)
- MOST and NSFC (China)
- COLCIENCIAS (Colombia)
- MSMT CR (Czech Republic)
- MPO CR and VSC CR (Czech Republic)
- DNRF (Denmark)
- DNSRC and Lundbeck Foundation (Denmark)
- ARTEMIS
- European Union
- IN2P3-CNRS (France)
- CEA-DSM/IRFU (France)
- GNAS (Georgia)
- BMBF (Germany)
- DFG (Germany)
- HGF (Germany)
- MPG and AvH Foundation (Germany)
- GSRT (Greece)
- ISF (Israel)
- MINERVA (Israel)
- GIF (Israel)
- DIP and Benoziyo Center (Israel)
- INFN (Italy)
- MEXT and JSPS (Japan)
- CNRST (Morocco)
- FOM and NWO (The Netherlands)
- RCN (Norway)
- MNiSW (Poland)
- GRICES and FCT (Portugal)
- MERYS (MECTS) (Romania)
- MES of Russia and ROSATOM
- Russian Federation
- JINR
- MSTD (Serbia)
- MSSR (Slovakia)
- ARRS and MVZT (Slovenia)
- DST/NRF (South Africa)
- MICINN (Spain)
- SRC and Wallenberg Foundation (Sweden)
- SER (Switzerland)
- SNSF and Cantons of Bern in Geneva (Switzerland)
- NSC (Taiwan)
- TAEK (Turkey)
- STFC (United Kingdom)
- Royal Society and Leverhulme Trust (United Kingdom)
- Department of Energy (DOE)
- NSF
Dates
- Created
-
2012-03-02Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field