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

Aaboud, M, Aad, C, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2853 more authors) (2017) Search for Heavy Higgs Bosons <i>A</i>/<i>H</i> Decaying to a Top Quark Pair in <i>pp</i> Collisions at √<i>s</i>=8 TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 119 (19). 191803-.

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A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (tt[over ¯]) 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 sqrt[s]=8  TeV. Interference effects between the signal process and standard model tt[over ¯] 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[over ¯] 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, tanβ, for m_{A/H}>500  GeV.

Item Type: Article
Additional Information: 30 pages in total, author list starting page 14, 3 figures, 3 tables, published version. All figures including auxiliary figures are available at
Uncontrolled Keywords: ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 24 Nov 2017 08:36
Last Modified: 19 Oct 2023 09:09
DOI: 10.1103/PhysRevLett.119.191803
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