Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
The observation of Higgs boson production in association with a top quark pair (tt¯H), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated lumino...
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todo:paper_03702693_v784_n_p173_Aaboud2023-10-03T15:30:00Z Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector Aaboud, M. The observation of Higgs boson production in association with a top quark pair (tt¯H), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯, WW ⁎ , τ + τ − , γγ, and ZZ ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100 +110 (syst.) fb, in agreement with the Standard Model prediction. © 2018 The Author(s) JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v784_n_p173_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 |
The observation of Higgs boson production in association with a top quark pair (tt¯H), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯, WW ⁎ , τ + τ − , γγ, and ZZ ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100 +110 (syst.) fb, in agreement with the Standard Model prediction. © 2018 The Author(s) |
format |
JOUR |
author |
Aaboud, M. |
spellingShingle |
Aaboud, M. Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
author_facet |
Aaboud, M. |
author_sort |
Aaboud, M. |
title |
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
title_short |
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
title_full |
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
title_fullStr |
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
title_full_unstemmed |
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector |
title_sort |
observation of higgs boson production in association with a top quark pair at the lhc with the atlas detector |
url |
http://hdl.handle.net/20.500.12110/paper_03702693_v784_n_p173_Aaboud |
work_keys_str_mv |
AT aaboudm observationofhiggsbosonproductioninassociationwithatopquarkpairatthelhcwiththeatlasdetector |
_version_ |
1782029492250738688 |