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Göran Jarlskog

Göran Jarlskog

Professor emeritus

Göran Jarlskog

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

Author

  • M Aaboud
  • G Aad
  • B. Abbott
  • O Abdinov
  • B Abeloos
  • S. H. Abidi
  • Torsten Åkesson
  • Simona Bocchetta
  • Caterina Doglioni
  • Vincent Hedberg
  • Göran Jarlskog
  • Charles Kalderon
  • Edgar Kellermann
  • Else Lytken
  • Katja Mankinen
  • Ulf Mjörnmark
  • Ruth Pöttgen
  • Trine Poulsen
  • Oxana Smirnova
  • Oleksandr Viazlo
Show all

Summary, in English

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.

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration

Publishing year

2017

Language

English

Publication/Series

Physical Review Letters

Volume

119

Issue

19

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • 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

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114