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

Simple item page
dc.contributor.authorAaboud, M.
dc.contributor.authorAad, Georges
dc.contributor.authorAbbott, Brad K.
dc.contributor.authorAbdinov, O. B.
dc.contributor.authorAbeloos, Baptiste
dc.contributor.authorAbhayasinghe, D. K.
dc.contributor.authorAbidi, Syed Hani
dc.contributor.authorAbouZeid, O. S.
dc.contributor.authorAbraham, Nicola L.
dc.contributor.authorAbramowicz, Halina
dc.contributor.institutionAaboud, M., Faculty of Science, Université Mohammed Premier Oujda, Oujda, Morocco
dc.contributor.institutionAad, Georges, Department of Physics, University of Massachusetts Amherst, Amherst, United States
dc.contributor.institutionAbbott, Brad K., Oklahoma State University, Stillwater, United States
dc.contributor.institutionAbdinov, O. B., Azerbaijan National Academy of Sciences, Baku, Azerbaijan
dc.contributor.institutionAbeloos, Baptiste, The University of Osaka, Suita, Japan
dc.contributor.institutionAbhayasinghe, D. K., Department of Physics and Astronomy, University College London, London, United Kingdom
dc.contributor.institutionAbidi, Syed Hani, TRIUMF, Vancouver, Canada
dc.contributor.institutionAbouZeid, O. S., Niels Bohr Institutet, Copenhagen, Denmark
dc.contributor.institutionAbraham, Nicola L., School of Physics, The University of Sydney, Sydney, Australia
dc.contributor.institutionAbramowicz, Halina, Aristotle University of Thessaloniki, Thessaloniki, Greece
dc.date.accessioned2025-10-05T16:06:55Z
dc.date.issued2018
dc.description.abstractThe 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.) <inf>−100</inf> +110 (syst.) fb, in agreement with the Standard Model prediction. © 2025 Elsevier B.V., All rights reserved.
dc.identifier.doi10.1016/j.physletb.2018.07.035
dc.identifier.endpage191
dc.identifier.issn03702693
dc.identifier.scopus2-s2.0-85051211826
dc.identifier.startpage173
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2018.07.035
dc.identifier.urihttps://hdl.handle.net/20.500.14719/11538
dc.identifier.volume784
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.oastatusAll Open Access
dc.relation.oastatusGold Open Access
dc.relation.oastatusGreen Accepted Open Access
dc.relation.oastatusGreen Open Access
dc.relation.sourcePhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.titleObservation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
dc.typeArticle
dcterms.referencesAad, Georges, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 716, 1, pp. 1-29, (2012), Chatrchyan, S. A., Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 716, 1, pp. 30-61, (2012), Jhep, (2016), Aaboud, M., Evidence for the H → bb decay with the ATLAS detector, Journal of High Energy Physics, 2017, 12, pp. 1-69, (2017), Jhep, (2018), Measurements of Higgs Boson Properties in the Diphoton Decay Channel with 36 Fb1 of Pp Collision Data at S 13 Tev with the Atlas Detector, Sirunyan, A., Observation of the Higgs boson decay to a pair of τ leptons with the CMS detector, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 779, pp. 283-316, (2018), Sirunyan, A., Evidence for the Higgs boson decay to a bottom quark–antiquark pair, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 780, pp. 501-532, (2018), Aaboud, M., Luminosity determination in pp collisions at √s = 8 TeV using the ATLAS detector at the LHC, European Physical Journal C, 76, 12, (2016), Aaboud, M., Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector, Physical Review D, 97, 7, (2018)
dspace.entity.typePublication
local.indexed.atScopus
person.identifier.scopus-author-id57189848621
person.identifier.scopus-author-id26326745400
person.identifier.scopus-author-id35226946900
person.identifier.scopus-author-id6507496079
person.identifier.scopus-author-id57110456500
person.identifier.scopus-author-id57193183451
person.identifier.scopus-author-id56536227400
person.identifier.scopus-author-id54989009000
person.identifier.scopus-author-id14007759700
person.identifier.scopus-author-id35226937900

Files

Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector.pdf
Size:
1.39 MB
Format:
Adobe Portable Document Format
Download

Collections

Scopus İndeksli Yayınlar Koleksiyonu