Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 72, Issue 7, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-012-2083-1
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Funding
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS, China
- MOST, China
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- Lundbeck Foundation, Denmark
- EPLANET, European Union
- ERC, European Union
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNAS, Georgia
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- AvH Foundation, Germany
- GSRT, Greece
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- DIP, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- GRICES, Portugal
- FCT, Portugal
- MERYS (MECTS), Romania
- MES of Russia, Russian Federation
- ROSATOM, Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MVZT, Slovenia
- DST/NRF, South Africa
- MICINN, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SER, Switzerland
- SNSF, Switzerland
- Canton of Bern, Switzerland
- NSC, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- Royal Society, United Kingdom
- Leverhulme Trust, United Kingdom
- DOE, United States of America
- NSF, United States of America
- Canton of Geneva, Switzerland
- ICREA Funding Source: Custom
- Division Of Physics
- Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/J004944/1, ST/G502320/1, ST/H001026/1, ST/K001310/1 ATLAS, ST/H001026/2, ST/I005803/1, ST/I003525/1, ST/L001195/1, ST/I005803/1 GRIDPP, ST/K000705/1, ST/J005576/1, ST/K001310/1 LHCb Upgrades, ST/I000186/1, ST/I006080/1, ST/J004928/1, PP/E003087/1, ST/H00100X/2, ST/K001310/1, GRIDPP, ST/K001310/1 ATLAS Upgrades, PP/E000355/1, ST/H00100X/1, ST/J004928/1 ATLAS Upgrade, ST/K001310/1 LHCb] Funding Source: researchfish
- STFC [ST/K001361/1, ST/H001069/2, ST/J005576/1, ST/M000761/1, PP/E003699/2, ST/J004944/1, ST/H001042/2, ST/F007337/1, ST/K00140X/1, ST/I005811/1, ST/H001042/1, PP/E000355/1, ST/J004928/1, ST/J004804/1, ST/H001026/1, ST/K000640/1, ST/I003142/1, ST/M000753/1, PP/E002757/1, ST/K000705/1, ST/I003525/1, ST/I005803/1, ST/J005460/1, PP/E003087/1, ST/I000186/1, ST/J002798/1, ST/K001329/1, ST/M001431/1, ST/H001093/2, ST/K001248/1, ST/K00073X/1, ST/M001512/1, PP/E003699/1, ST/H001026/2, ST/K001337/1, PP/E000347/1, ST/H00100X/2, ST/I003517/1, ST/L001144/1, ST/H00100X/1, ST/K501840/1, ST/H001093/1, ST/L001195/1, ST/I006080/1, ST/G502320/1] Funding Source: UKRI
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A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb(-1), which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to t (t) over bar for narrow and wide resonances. For narrow Z' bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of m(Z') = 500 GeV to m(Z') = 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z' boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m(Z') < 880 GeV (m(gKK) < 1130 GeV).
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