期刊
PHYSICAL REVIEW D
卷 88, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.012004
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资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWF
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq
- FAPESP, Brazil
- NSERC
- NRC
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS
- MOST
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR
- MPO CR
- VSC CR, Czech Republic
- DNRF
- DNSRC
- Lundbeck Foundation, Denmark
- EPLANET
- ERC
- NSRF
- European Union
- IN2P3-CNRS
- CEA-DSM/IRFU, France
- GNSF, Georgia
- DFG
- HGF
- MPG
- AvH Foundation, Germany
- GSRT
- NSRF, Greece
- ISF
- MINERVA
- GIF
- DIP
- Benoziyo Center, Israel
- INFN, Italy
- MEXT
- JSPS, Japan
- CNRST, Morocco
- FOM
- NWO, Netherlands
- BRF
- RCN, Norway
- MNiSW, Poland
- GRICES
- FCT, Portugal
- MERYS (MECTS), Romania
- MES of Russia
- ROSATOM, Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS
- MIZS., Slovenia
- DST/NRF, South Africa
- MICINN, Spain
- SRC and Wallenberg Foundation, Sweden
- SER
- SNSF
- Cantons of Bern
- Geneva, Switzerland
- NSC, Taiwan
- TAEK, Turkey
- STFC
- Royal Society and Leverhulme Trust, United Kingdom
- DOE
- NSF, United States of America
- ICREA Funding Source: Custom
- Division Of Physics
- Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/L003325/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/L003112/1, ST/L00352X/1, ST/H001042/1, ST/H001042/2, ST/H001093/1, ST/K001361/1, ST/K501840/1, ST/K001337/1, ST/K001264/1 ATLAS, ST/L00335X/1, ST/H00095X/2, ST/I005803/1 GRIDPP, ST/M000761/1, ST/K001248/1, ST/K001361/1 ATLAS, ST/K00140X/1 ATLAS, ST/L001195/1, PP/E002757/1, ST/K000659/1, ST/L000970/1 ATLAS Upgrade, ST/K003658/1 GRIDPP, ST/K001329/1 ATLAS, ST/I003142/1, PP/E000487/1, ST/M001474/1, ST/M000664/1, ST/J501074/1, ST/K003658/1, ST/J005533/1, ST/I005803/1, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/L001004/1, ST/M001512/1, ST/M001431/1, PP/E003699/1, ST/G502320/1, ST/L001209/1 ATLAS Upgrades, ST/K501840/1 GRIDPP, ST/H00095X/1, ST/H001093/2, ST/K003437/1 GRIDPP, ST/J004944/1, ATLAS, ST/K001329/1, ST/K00140X/1, ST/K001426/1 ATLAS, ST/K001310/1 LHCb, ST/J004928/1 ATLAS Upgrade, ST/K001361/1 LHCb, ST/L000970/1, ST/F007418/1, ST/H00100X/1, ST/J002798/1, ST/K50208X/1, PP/E000355/1, ST/K003496/1 GRIDPP, ST/K001361/1 ATLAS Upgrades, ST/F007337/1, ST/K001310/1 ATLAS Upgrades, ST/I505756/1, ST/K00073X/1, ST/J005460/1, GRIDPP, PP/E003699/2, ST/K003437/1, ST/J004936/1, ST/K001310/1, ST/F00754X/1, ST/K000195/1, ST/J005541/1, ST/J500641/1, ST/L001144/1, ST/H00100X/2, ST/I003517/1, PP/E003087/1, ST/J004928/1, ST/I006080/1, ST/K001337/1 ATLAS, ST/I000186/1, ST/K001388/1, ST/K003496/1, ST/K001310/1 LHCb Upgrades, ST/J005576/1, ST/K000705/1, ST/K000713/1, ST/I005811/1] Funding Source: researchfish
- STFC [ST/K50208X/1, ST/L00335X/1, ST/I005811/1, ST/H001042/1, ST/K000659/1, PP/E000355/1, ST/J004928/1, ST/K003658/1, ST/G502320/1, PP/E000487/1, ST/I006080/1, ST/J005533/1, ST/L001004/1, ST/L001195/1, ST/F00754X/1, ST/H001093/1, ST/K003496/1, ST/K501840/1, ST/K000640/1, ST/I003142/1, ST/M000753/1, ST/F007418/1, PP/E002757/1, ST/H00095X/1, ST/K000705/1, ST/J501074/1, ST/J500641/1, ST/K00140X/1, ST/F007337/1, ST/H001042/2, ST/J004944/1, ST/L003325/1, PP/E003699/2, ST/L00352X/1, ST/J005568/1, ST/M000761/1, ST/J005576/1, ST/H001069/2, ST/K000713/1, ST/M000664/1, ST/K000195/1, ST/L000970/1, ST/K001361/1, ST/H00095X/2, ST/I005803/1, ST/J005460/1, PP/E003087/1, ST/I000186/1, ST/L003112/1, ST/K001388/1, ST/J002798/1, ST/K001329/1, ST/M001431/1, ST/I505756/1, ST/K003437/1, ST/H001093/2, ST/K001248/1, ST/J005541/1, ST/K00073X/1, ST/K00137X/1, ST/M001512/1, PP/E003699/1, ST/K001337/1, PP/E000347/1, ST/H00100X/2, ST/I003517/1, ST/L001144/1, ST/J004936/1, ST/H00100X/1] Funding Source: UKRI
A search for new particles that decay into top quark pairs (t (t) over bar) is performed with the ATLAS experiment at the LHC using an integrated luminosity of 4.7 fb(-1) of proton-proton (pp) collision data collected at a center-of-mass energy root s = 7 TeV. In the t (t) over bar) -> WbWb decay, the lepton plus jets final state is used, where one W boson decays leptonically and the other hadronically. The t (t) over bar) system is reconstructed using both small-radius and large-radius jets, the latter being supplemented by a jet substructure analysis. A search for local excesses in the number of data events compared to the Standard Model expectation in the t (t) over bar) invariant mass spectrum is performed. No evidence for a t (t) over bar) resonance is found and 95% credibility-level limits on the production rate are determined for massive states predicted in two benchmark models. The upper limits on the cross section times branching ratio of a narrow Z' resonance range from 5.1 pb for a boson mass of 0.5 TeV to 0.03 pb for a mass of 3 TeV. A narrow leptophobic topcolor Z' resonance with a mass below 1.74 TeV is excluded. Limits are also derived for a broad color-octet resonance with m 15.3%. A Kaluza-Klein excitation of the gluon in a Randall-Sundrum model is excluded for masses below 2.07 TeV.
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