Observation of H→bb¯ decays and VH production with the ATLAS detector

A search for the decay of the Standard Model Higgs boson into a bb¯ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8fb −1 were collected in proton–proton collisions during Run 2 of the Large Hadron...

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Publicado: 2018
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v786_n_p59_Aaboud
http://hdl.handle.net/20.500.12110/paper_03702693_v786_n_p59_Aaboud
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spelling paper:paper_03702693_v786_n_p59_Aaboud2023-06-08T15:37:40Z Observation of H→bb¯ decays and VH production with the ATLAS detector A search for the decay of the Standard Model Higgs boson into a bb¯ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8fb −1 were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13TeV. For a Higgs boson mass of 125GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the bb¯ decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into bb¯ to the Standard Model expectation is 1.01±0.12(stat.) −0.15 +0.16 (syst.). Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations. © 2018 The Author(s) 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v786_n_p59_Aaboud http://hdl.handle.net/20.500.12110/paper_03702693_v786_n_p59_Aaboud
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 for the decay of the Standard Model Higgs boson into a bb¯ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8fb −1 were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13TeV. For a Higgs boson mass of 125GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the bb¯ decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into bb¯ to the Standard Model expectation is 1.01±0.12(stat.) −0.15 +0.16 (syst.). Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations. © 2018 The Author(s)
title Observation of H→bb¯ decays and VH production with the ATLAS detector
spellingShingle Observation of H→bb¯ decays and VH production with the ATLAS detector
title_short Observation of H→bb¯ decays and VH production with the ATLAS detector
title_full Observation of H→bb¯ decays and VH production with the ATLAS detector
title_fullStr Observation of H→bb¯ decays and VH production with the ATLAS detector
title_full_unstemmed Observation of H→bb¯ decays and VH production with the ATLAS detector
title_sort observation of h→bb¯ decays and vh production with the atlas detector
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v786_n_p59_Aaboud
http://hdl.handle.net/20.500.12110/paper_03702693_v786_n_p59_Aaboud
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