期刊
PHYSICS LETTERS B
卷 740, 期 -, 页码 222-242出版社
ELSEVIER
DOI: 10.1016/j.physletb.2014.11.049
关键词
Higgs boson; Diphoton decay; t(t)over-barH; Top quark; Yukawa coupling; tH
资金
- 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
- EPLANET, European Union
- ERC, European Union
- NSRF, European Union
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNSF, Georgia
- BMBF, Germany
- DFG, Germany
- HGF, Germany
- MPG, Germany
- AvH Foundation, Germany
- GSRT, Greece
- NSRF, Greece
- ISF, Israel
- MINERVA, Israel
- GIF, Israel
- I-CORE, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- BRF, Norway
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- GRICES, Portugal
- FCT, Portugal
- MNE/IFA, Romania
- MES of Russia, Russian Federation
- ROSATOM, Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DST/NRF, South Africa
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SER, Switzerland
- SNSF, Switzerland
- Canton of Bern, Switzerland
- Canton of Geneva, 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
- Science and Technology Facilities Council [ST/K001248/1, ST/I005803/1 GRIDPP, ST/K001264/1 ATLAS, ST/K001302/1, ST/L003112/1, ST/J00474X/1, ST/I00372X/1, ST/L003325/1, ST/M004821/1 GRIDPP, ST/L000970/1 ATLAS Upgrades, ST/M003213/1, ST/G50228X/1, ST/L001195/1, ST/M001407/1, ST/M002306/1 ATLAS Upgrades, ST/L000970/1 ATLAS Upgrade, ST/I000178/1, ST/K003658/1 GRIDPP, ST/M006980/1, ST/M002071/1 ATLAS Upgrades, 1521422, PP/D002915/1, ST/J005525/1, ST/M001474/1, ST/M000664/1, ST/J501074/1, ST/K003658/1, ST/L001179/1 ATLAS Upgrades, ST/M503575/1, ST/I005803/1, ST/L006480/1, ST/M007103/1 ATLAS Upgrades, ST/K001310/1 ATLAS, ST/I00372X/1 GRIDPP, ST/G502320/1, ST/L001209/1 ATLAS Upgrades, ST/K00137X/1, ST/L001179/1, ST/L003414/1, ST/N000277/1, 1366364, ST/J004944/1, ST/M001504/1, ST/I006056/1, ST/K001418/1, ATLAS, ST/K001329/1, 1575161, ST/K001426/1 ATLAS, ST/K001310/1 LHCb, ST/L003511/1, ST/J004928/1 ATLAS Upgrade, ST/L000970/1, ST/H00100X/1, ST/J004928/1 ATLAS Upgrades, ST/J005487/1, ST/K50208X/1, PP/E000355/1, ST/I006056/1 ATLAS Upgrades, ST/I006056/1 ATLAS Upgrade, ST/K001310/1 ATLAS Upgrades, ST/K000705/1, ST/N000420/1, ST/J005576/1, ST/K001310/1 LHCb Upgrades, ST/M006980/1 ATLAS Upgrades, ST/K001388/1, ST/I000186/1, ST/I006080/1, ST/N000307/1, ST/J004928/1, PP/E003087/1, ST/H00100X/2, ST/M004821/1, PP/E002846/1, ST/M001733/1, ST/J00474X/1 ATLAS Upgrades, ST/K001310/1, PP/E000444/1, 1201187, 1082012, ST/L006464/1, GRIDPP, ST/M002306/1, ST/L001179/1 ATLAS Upgrade] Funding Source: researchfish
- ICREA Funding Source: Custom
- STFC [ST/L006464/1, ST/N000307/1, ST/J005487/1, ST/J005525/1, ST/K000705/1, ST/M001407/1, ST/M006980/1, ST/J501074/1, ST/J00474X/1, ST/M001504/1, ST/N000420/1, ST/M003213/1, ST/J004944/1, ST/L003325/1, ST/K001302/1, ST/M004821/1, ST/L003511/1, ST/M002306/1, ST/M503575/1, ST/J005576/1, ST/M000664/1, ST/L000970/1, ST/N000277/1, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/L003112/1, ST/I000178/1, ST/K001388/1, ST/M001733/1, ST/K001329/1, ST/G50228X/1, ST/K001248/1, ST/K00137X/1, ST/I006056/1, ST/L006480/1, ST/H00100X/2, ST/H00100X/1, PP/E002846/1, ST/J004928/1, ST/I00372X/1, ST/K003658/1, ST/L001179/1, ST/L003414/1, ST/G502320/1, ST/I006080/1, ST/L001195/1, PP/D002915/1, PP/E000355/1, ST/K50208X/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Physics [1119200] Funding Source: National Science Foundation
A search is performed for Higgs bosons produced in association with top quarks using the diphoton decay mode of the Higgs boson. Selection requirements are optimized separately for leptonic and fully hadronic final states from the top quark decays. The dataset used corresponds to an integrated luminosity of 4.5 fb(-1) of proton-proton collisions at a center-of-mass energy of 7 TeV and 20.3 fb(-1) at 8 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess over the background prediction is observed and upper limits are set on the ttH production cross section. The observed exclusion upper limit at 95% confidence level is 6.7 times the predicted Standard Model cross section value. In addition, limits are set on the strength of the Yukawa coupling between the top quark and the Higgs boson, taking into account the dependence of the ttH and tH cross sections as well as the H -> gamma gamma branching fraction on the Yukawa coupling. Lower and upper limits at 95% confidence level are set at 1.3 and +8.0 times the Yukawa coupling strength in the Standard Model. (C) 2014 The Authors. Published by Elsevier B.V.
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