期刊
EUROPEAN PHYSICAL JOURNAL C
卷 71, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-011-1577-6
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资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq
- FAPESP, Brazil
- NSERC
- NRC
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS
- MOST
- NSFC, China
- COLCIENCIAS, Colombia
- MEYS (MSMT)
- MPO
- CCRC, Czech Republic
- DNRF
- DNSRC
- Lundbeck Foundation, Denmark
- ARTEMIS
- European Union
- IN2P3-CNRS
- CEA-DSM/IRFU, France
- GNAS, Georgia
- BMBF
- DFG
- HGF
- MPG
- AvH Foundation, Germany
- GSRT, Greece
- ISF
- ISF, MINERVA
- GIF
- DIP
- Benoziyo Center, Israel
- INFN, Italy
- MEXT
- JSPS, Japan
- CNRST, Morocco
- FOM
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- GRICES
- FCT, Portugal
- MERYS (MECTS), Romania
- MES of Russia
- ROSATOM
- Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS
- MVZT, Slovenia
- DST/NRF, South Africa
- MICINN, Spain
- SRC
- Wallenberg Foundation, Sweden
- SER
- SNSF
- Cantons of Bern
- Geneva, Switzerland
- NSC, Taiwan
- TAEK, Turkey
- STFC
- Royal Society
- Leverhulme Trust, United Kingdom
- DOE
- NSF, United States of America
- STFC [PP/E000347/1, PP/E002838/1, ST/H000887/2, ST/G502320/1, ST/I006080/1, ST/H001093/1, ST/H001026/1, ST/F007337/1, PP/E003699/2, ST/H001069/1, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/H001077/1, ST/H001093/2, ST/K00073X/1, PP/E003699/1, ST/H001026/2, PP/E006388/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000347/1, ST/H001093/1, ST/I005803/1 GRIDPP, ST/H000887/2, ST/I005803/1, ST/H001026/2, ST/H001026/1, PP/E003699/1, ST/G502320/1, ST/H001093/2, PP/E002838/1, ATLAS, ST/H001069/1, ST/H001077/1, ST/F007337/1, PP/E006388/1, ST/K00073X/1, GRIDPP, PP/E003699/2, ST/I000186/1, ST/I006080/1, PP/E003087/1, PP/E000444/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [855405] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0955626] Funding Source: National Science Foundation
A measurement of the production cross-section for top quark pairs (t (t) over bar) in pp collisions at root s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon mu) with large missing transverse energy and at least four jets, and dilepton (ee, mu mu or e mu) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb(-1), 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-t (t) over bar Standard Model processes are estimated using data-driven methods and determined to be 12.2 +/- 3.9 events and 2.5 +/- 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM t (t) over bar production. The inclusive top quark pair production cross-section is measured to be sigma(t (t) over bar) = 145 +/- 31 (stat.)(-27)(+42) (syst.) pb. The measurement agrees with perturbative QCD calculations.
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