Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV
A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H 0 ), an intermediate charged Higgs-boson pair (H - ), and a light Higgs boson (h 0 ). The analysis searches for events involving the production of a single heavy neutral Higgs boson whi...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n3_p_Aad http://hdl.handle.net/20.500.12110/paper_15507998_v89_n3_p_Aad |
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paper:paper_15507998_v89_n3_p_Aad2023-06-08T16:22:44Z Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H 0 ), an intermediate charged Higgs-boson pair (H - ), and a light Higgs boson (h 0 ). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom-antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom-antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3 fb -1 , collected by the ATLAS detector in proton-proton collisions at √s = 8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 to 43 pb as a function of H 0 and H - masses, with m h 0 fixed at 125 GeV. © 2014 CERN, for the ATLAS Collaboration. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n3_p_Aad http://hdl.handle.net/20.500.12110/paper_15507998_v89_n3_p_Aad |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H 0 ), an intermediate charged Higgs-boson pair (H - ), and a light Higgs boson (h 0 ). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom-antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom-antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3 fb -1 , collected by the ATLAS detector in proton-proton collisions at √s = 8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 to 43 pb as a function of H 0 and H - masses, with m h 0 fixed at 125 GeV. © 2014 CERN, for the ATLAS Collaboration. |
| title |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| spellingShingle |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| title_short |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| title_full |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| title_fullStr |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| title_full_unstemmed |
Search for a multi-Higgs-boson cascade in W + W - bb̄ events with the ATLAS detector in pp collisions at √s = 8 TeV |
| title_sort |
search for a multi-higgs-boson cascade in w + w - bb̄ events with the atlas detector in pp collisions at √s = 8 tev |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n3_p_Aad http://hdl.handle.net/20.500.12110/paper_15507998_v89_n3_p_Aad |
| _version_ |
1768546691814785024 |