Search for heavy Higgs Bosons A/H decaying to a top quark pair in pp collisions at √s=8 TeV with the ATLAS Detector

, The ATLAS collaboration (2017) Search for heavy Higgs Bosons A/H decaying to a top quark pair in pp collisions at √s=8 TeV with the ATLAS Detector. Physical review letters, 119 (19). ISSN 1079-7114

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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, tan β, for mA/H > 500 GeV.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
88913
Deposited By:
Deposited On:
24 Nov 2017 02:02
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 05:12