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Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector

Aaboud, M.
•
Aad, G.
•
Abbott, B.
altro
Zwalinski, L.
2018
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
The observation of Higgs boson production in association with a top quark pair (t ̄tH), 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 b ̄b, 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 t ̄tHsearches using a dataset corresponding to integrated luminosities of 4.5 fb−1at 7TeVand 20.3 fb−1at 8TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total t ̄tHproduction cross section at 13 TeV is measured to be 670±90 (stat.)+110−100(syst.) fb, in agreement with the Standard Model prediction.
DOI
10.1016/j.physletb.2018.07.035
WOS
WOS:000445781600029
Archivio
http://hdl.handle.net/11390/1136507
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85051211826
https://www.sciencedirect.com/science/article/pii/S0370269318305732?via=ihub
Diritti
open access
Soggetti
  • Higgs Top LHC observa...

Scopus© citazioni
212
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
211
Data di acquisizione
Mar 27, 2024
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