Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS

This Letter presents a search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →ℓ + ℓ - ℓ '+ ℓ '- , where ℓ, ℓ ' =e or μ, using proton-proton collisions at √s=7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb -1 . The four-l...

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Guardado en:
Detalles Bibliográficos
Publicado: 2012
Materias:
ATLAS
Higgs
Leptons
LHC
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n3_p383_Aad
http://hdl.handle.net/20.500.12110/paper_03702693_v710_n3_p383_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03702693_v710_n3_p383_Aad
record_format dspace
spelling paper:paper_03702693_v710_n3_p383_Aad2023-06-08T15:37:03Z Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS ATLAS Higgs Leptons LHC This Letter presents a search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →ℓ + ℓ - ℓ '+ ℓ '- , where ℓ, ℓ ' =e or μ, using proton-proton collisions at √s=7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb -1 . The four-lepton invariant mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV and 268-415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125 GeV, 244 GeV and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant. © 2012 CERN. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n3_p383_Aad http://hdl.handle.net/20.500.12110/paper_03702693_v710_n3_p383_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic ATLAS
Higgs
Leptons
LHC
spellingShingle ATLAS
Higgs
Leptons
LHC
Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
topic_facet ATLAS
Higgs
Leptons
LHC
description This Letter presents a search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →ℓ + ℓ - ℓ '+ ℓ '- , where ℓ, ℓ ' =e or μ, using proton-proton collisions at √s=7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb -1 . The four-lepton invariant mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV and 268-415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125 GeV, 244 GeV and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant. © 2012 CERN.
title Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
title_short Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
title_full Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
title_fullStr Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
title_full_unstemmed Search for the Standard Model Higgs boson in the decay channel H→ZZ (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 TeV with ATLAS
title_sort search for the standard model higgs boson in the decay channel h→zz (*) →4ℓ with 4.8 fb -1 of pp collision data at √s=7 tev with atlas
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n3_p383_Aad
http://hdl.handle.net/20.500.12110/paper_03702693_v710_n3_p383_Aad
_version_ 1768544183294885888

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