Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP01(2016)064
Keywords
Hadron-Hadron scattering; Top physics
Categories
Funding
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, 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
- IN2P3-CNRS, France
- CEADSM/IRFU, France
- GNSF, Georgia
- BMBF, Germany
- HGF, Germany
- MPG, Germany
- GSRT, Greece
- RGC, China
- Hong Kong SAR, China
- ISF, Israel
- I-CORE, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- MES of Russia, Russian Federation
- NRC KI, Russian Federation
- JINR
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DST/NRF, South Africa
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SERI, Switzerland
- SNSF, Switzerland
- Canton of Bern, Switzerland
- Canton of Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- DOE, United States of America
- NSF, United States of America
- BCKDF, Canada
- Canada Council, Canada
- CANARIE, Canada
- CRC, Canada
- Compute Canada, Canada
- FQRNT, Canada
- Ontario Innovation Trust, Canada
- EPLANET, European Union
- ERC, European Union
- FP7, European Union
- Horizon 2020, European Union
- Marie Sklodowska-Curie Actions, European Union
- Investissements d'Avenir Labex and Idex, France
- ANR, France
- Region Auvergne and Fondation Partager le Savoir, France
- DFG, Germany
- AvH Foundation, Germany
- EU-ESF
- Greek NSRF
- BSF, Israel
- GIF, Israel
- Minerva, Israel
- BRF, Norway
- Royal Society, United Kingdom
- Leverhulme Trust, United Kingdom
- ICREA Funding Source: Custom
- STFC [ST/I003533/1, ST/H00100X/1, ST/L001144/1, ST/H00100X/2, ST/K00073X/1, ST/G50228X/1, ST/K001248/1, PP/D002915/1, PP/E000355/1, PP/E002846/1, ST/I00372X/1, ST/L001179/1, ST/L003414/1, ST/L001195/1, ST/H001093/1, ST/J005487/1, ST/J005525/1, ST/M004937/1, ST/K000705/1, ST/K000039/1, ST/M001407/1, ST/M006980/1, ST/N000463/1, ST/J00474X/1, ST/M001504/1, ST/N000420/1, ST/I000119/1, ST/K00140X/1, ST/H001093/2, ST/K001302/1, ST/K003895/1, ST/M002306/1, ST/L00352X/1, ST/M000761/1, ST/J004979/1, ST/L006111/1, ST/P002439/1, ST/K001361/1, ST/N000277/1, ST/L003112/1, ST/I000178/1, ST/M001733/1, ST/K001329/1, ST/M001431/1, ST/K00137X/1, ST/I006056/1, PP/E000347/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K00140X/1, ST/K001426/1 ATLAS, ST/K001310/1 LHCb, ST/K001361/1 LHCb, ST/M004937/1 GRIDPP, ST/H00100X/1, ST/J005487/1, PP/E000355/1, ST/I006056/1 ATLAS Upgrades, ST/I006056/1 ATLAS Upgrade, ST/K001361/1 ATLAS Upgrades, ST/K001310/1 ATLAS Upgrades, ST/L001179/1 ATLAS Upgrade, ST/I003533/1, ST/M002306/1, ST/M004937/1, ST/J004979/1, ST/K00073X/1, GRIDPP, 1082012, 1201187, PP/E000444/1, ST/K001310/1, ST/L006111/1, 1334588, ST/J00474X/1 ATLAS Upgrades, ST/M001733/1, PP/E002846/1, ST/L001144/1, ST/H00100X/2, ST/M006980/1 ATLAS Upgrades, ST/K001310/1 LHCb Upgrades, ST/N000420/1, ST/K000705/1, ST/P002439/1, ST/I00372X/1, ST/J00474X/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/L003112/1, ST/L00352X/1, ST/H001093/1, 1366825, ST/K001361/1, ST/K001302/1, ST/K001264/1 ATLAS, ST/I000119/1, 1575161, ST/K001329/1, ATLAS, ST/K003895/1, ST/K001418/1, ST/I006056/1, ST/M001504/1, 1366364, ST/N000277/1, ST/L003414/1, ST/K000039/1, ST/H001093/2, ST/N000463/1, ST/L001179/1, ST/K00137X/1, ST/L001209/1 ATLAS Upgrades, ST/I003533/1 GRIDPP, ST/M001431/1, ST/I00372X/1 GRIDPP, ST/K001361/1 MINOS/MINOS+, ST/K001310/1 ATLAS, ST/M007103/1 ATLAS Upgrades, ST/L001179/1 ATLAS Upgrades, ST/M001474/1, ST/J005525/1, PP/D002915/1, 1521422, ST/M002071/1 ATLAS Upgrades, ST/M006980/1, ST/I000178/1, ST/K001396/1 ATLAS, ST/M002306/1 ATLAS Upgrades, ST/M001407/1, ST/L001195/1, ST/G50228X/1, ST/K001361/1 ATLAS, ST/K001248/1, ST/M000761/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [1506173, 1410972, 1119200] Funding Source: National Science Foundation
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The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at is measured. The dataset corresponds to an integrated luminosity of 20.3 fb(-1), collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7 sigma. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0 +/- 1.3(stat.) (-aEuro parts per thousand 3.5) (+ 3.2) (syst.)+/- 1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |V (tb) | of 1.01 +/- 0.10 and a lower limit of 0.80 at the 95% confidence level. The cross-section for the production of a top quark and a W boson is also measured in a fiducial acceptance requiring two leptons with p (T) > 25 GeV and |eta| < 2.5, one jet with p (T) > 20 GeV and |eta| < 2.5, and E (T) (miss) > 20 GeV, including both W t and top-quark pair events as signal. The measured value of the fiducial cross-section is 0.85 +/- A 0.01(stat.) (-aEuro parts per thousand 0.07) (+ 0.07) (syst.)+/- 0.03(lumi.) pb.
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