Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/57549

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dc.contributor.authorOnofre, A.por
dc.contributor.authorCastro, Nuno Filipepor
dc.contributor.authorATLAS Collaborationpor
dc.date.accessioned2018-12-31T01:27:58Z-
dc.date.available2018-12-31T01:27:58Z-
dc.date.issued2018-
dc.identifier.citationAaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., . . . Zwalinski, L. (2018). Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 784, 173-191. doi: 10.1016/j.physletb.2018.07.035por
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/1822/57549-
dc.description.abstractThe observation of Higgs boson production in association with a top quark pair (), 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 , ⁎, , γγ, and ⁎, the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the 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 production cross section at 13 TeV is measured to be 670 ± 90 (stat.) (syst.) fb, in agreement with the Standard Model prediction.por
dc.description.sponsorshipOIT -Ontario Innovation Trust(NRC)por
dc.language.isoengpor
dc.publisherElsevier B.V.por
dc.rightsopenAccesspor
dc.titleObservation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detectorpor
dc.typearticlepor
dc.peerreviewedyespor
oaire.citationStartPage173por
oaire.citationEndPage191por
oaire.citationVolume784por
dc.identifier.essn1873-2445-
dc.identifier.doi10.1016/j.physletb.2018.07.035por
dc.subject.fosCiências Naturais::Ciências Físicaspor
dc.description.publicationversioninfo:eu-repo/semantics/publishedVersionpor
dc.subject.wosScience & Technologypor
sdum.journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physicspor
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