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

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 si...

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Detalles Bibliográficos
Publicado: 2017
Materias:
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
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n19_p_Aaboud
http://hdl.handle.net/20.500.12110/paper_00319007_v119_n19_p_Aaboud
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319007_v119_n19_p_Aaboud
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spelling paper:paper_00319007_v119_n19_p_Aaboud2023-06-08T14:58:21Z Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector 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 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. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n19_p_Aaboud http://hdl.handle.net/20.500.12110/paper_00319007_v119_n19_p_Aaboud
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector
topic_facet 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
description 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.
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
title_short Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector
title_full Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector
title_fullStr Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector
title_full_unstemmed Search for Heavy Higgs Bosons A /H Decaying to a Top Quark Pair in pp Collisions at s =8 TeV with the ATLAS Detector
title_sort search for heavy higgs bosons a /h decaying to a top quark pair in pp collisions at s =8 tev with the atlas detector
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n19_p_Aaboud
http://hdl.handle.net/20.500.12110/paper_00319007_v119_n19_p_Aaboud
_version_ 1768543550012653568

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