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Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector

Aaboud, M; Aad, G; Abbott, B.; Abdinov, O; Abeloos, B; Abidi, S. H.; Åkesson, Torsten LU ; Bocchetta, Simona LU ; Doglioni, Caterina LU and Hedberg, Vincent LU , et al. (2017) In Physical Review Letters 119(19).
Abstract
A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (tt) 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 s=8 TeV. Interference effects between the signal process and standard model tt 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 tt 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... (More)
A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (tt) 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 s=8 TeV. Interference effects between the signal process and standard model tt 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 tt 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 mA/H and the ratio of the vacuum expectation values of the two Higgs fields, tanβ, for mA/H>500 GeV. © 2017 CERN. (Less)
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Elementary particles, High energy physics, Mass spectrometry, Signal processing, Tellurium compounds, Expectation values, Higgs doublet models, Interference effects, Invariant-mass spectra, Large Hadron Collider, Proton proton collisions, The standard model, Transverse momenta, Bosons
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Physical Review Letters
volume
119
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19
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American Physical Society
external identifiers
  • scopus:85034070285
ISSN
1079-7114
DOI
10.1103/PhysRevLett.119.191803
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English
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8a481d8d-f181-4073-9abd-204a24c94e0d
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2017-12-08 09:57:44
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2018-11-11 21:30:19
@article{8a481d8d-f181-4073-9abd-204a24c94e0d,
  abstract     = {A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (tt) 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 s=8 TeV. Interference effects between the signal process and standard model tt 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 tt 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 mA/H and the ratio of the vacuum expectation values of the two Higgs fields, tanβ, for mA/H>500 GeV. © 2017 CERN.},
  author       = {Aaboud, M and Aad, G and Abbott, B. and Abdinov, O and Abeloos, B and Abidi, S. H. and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Lytken, Else and Mankinen, Katja and Mjörnmark, Ulf and Pöttgen, Ruth and Poulsen, Trine and Smirnova, Oxana and Viazlo, Oleksandr and , },
  issn         = {1079-7114},
  keyword      = {Elementary particles,High energy physics,Mass spectrometry,Signal processing,Tellurium compounds,Expectation values,Higgs doublet models,Interference effects,Invariant-mass spectra,Large Hadron Collider,Proton proton collisions,The standard model,Transverse momenta,Bosons},
  language     = {eng},
  number       = {19},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.119.191803},
  volume       = {119},
  year         = {2017},
}