期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.191803
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- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW Austria
- FWF, Austria
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- CNPq, Brazil
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- 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
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- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
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- HGF, Germany
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- DOE, United States of America
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- BCKDF
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- Ontario Innovation Trust, Canada
- EPLANET, European Union
- ERC, European Union
- ERDF, European Union
- FP7, European Union
- Horizon and Marie Sklodowska-Curie Actions, European Union
- Investissement d'Avenir Labex, France
- DFG, Germany
- AvH Foundation, Germany
- Herakleitos, programme
- Thales programme
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- Generalitat Valenciana, Spain
- Royal Society and Leverhulme Trust, United Kingdom
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- ANR, France
- Region Auvergne, France
- Fondation Partager le Savoir, France
- Direct For Mathematical & Physical Scien
- Division Of Physics [1624739] Funding Source: National Science Foundation
- Science and Technology Facilities Council [1366825, PP/E000452/1, ST/K001329/1 ATLAS, ST/J005533/1, ST/J004804/1, ST/H001158/1, ST/H001158/2, ST/N000277/1, ATLAS, ST/K001329/1, 1653101, ST/K001329/1 nEDM, 1659192, ST/N000331/1, ST/N000307/1, 1334588, GRIDPP, ST/N000404/1] Funding Source: researchfish
- STFC [ST/K001329/1, ST/N000404/1, PP/E000452/1, ST/J004804/1, ST/J005533/1, 1653101, ST/N000307/1, ST/N000331/1, ST/H001158/2, ST/N000277/1, ST/H001158/1] Funding Source: UKRI
A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (t (t) over bar) has been performed with 20.3 fb(-1) of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy root s = 8 TeV. Interference effects between the signal process and standard model t (t) over bar production, which are expected to distort the signal shape from a single peak to a peak-dip structure, are taken into account. No significant deviation from the standard model prediction is observed in the t (t) over bar invariant mass spectrum in final states with an electron or muon, large missing transverse momentum, and at least four jets. The results are interpreted within the context of a type-II two-Higgs-doublet model. Exclusion limits on the signal strength are derived as a function of the mass m(A/H) and the ratio of the vacuum expectation values of the two Higgs fields, tan beta, for m(A/H) > 500 GeV.
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