File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Evidence for tt¯tt¯ production in the multilepton final state in proton–proton collisions at √s = 13 TeV with the ATLAS detector

TitleEvidence for tt¯tt¯ production in the multilepton final state in proton–proton collisions at √s = 13 TeV with the ATLAS detector
Authors
Issue Date2020
PublisherSpringer Verlag: SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org
Citation
The European Physical Journal C: Particles and Fields, 2020, v. 80 n. 11, p. article no. 1085 How to Cite?
AbstractA search is presented for four-top-quark production using an integrated luminosity of 139 fb-1 of proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. Events are selected if they contain a same-sign lepton pair or at least three leptons (electrons or muons). Jet multiplicity, jet flavour and event kinematics are used to separate signal from the background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The four-top-quark production cross section is measured to be 24-6+7 fb. This corresponds to an observed (expected) significance with respect to the background-only hypothesis of 4.3 (2.4) standard deviations and provides evidence for this process.
Persistent Identifierhttp://hdl.handle.net/10722/295455
ISSN
2020 Impact Factor: 4.59
2015 SCImago Journal Rankings: 0.724
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorPeng, C-
dc.contributor.authorTam, KC-
dc.contributor.authorTu, Y-
dc.contributor.authorATLAS Collaboration-
dc.date.accessioned2021-01-25T11:15:10Z-
dc.date.available2021-01-25T11:15:10Z-
dc.date.issued2020-
dc.identifier.citationThe European Physical Journal C: Particles and Fields, 2020, v. 80 n. 11, p. article no. 1085-
dc.identifier.issn1434-6044-
dc.identifier.urihttp://hdl.handle.net/10722/295455-
dc.description.abstractA search is presented for four-top-quark production using an integrated luminosity of 139 fb-1 of proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. Events are selected if they contain a same-sign lepton pair or at least three leptons (electrons or muons). Jet multiplicity, jet flavour and event kinematics are used to separate signal from the background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The four-top-quark production cross section is measured to be 24-6+7 fb. This corresponds to an observed (expected) significance with respect to the background-only hypothesis of 4.3 (2.4) standard deviations and provides evidence for this process.-
dc.languageeng-
dc.publisherSpringer Verlag: SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org-
dc.relation.ispartofThe European Physical Journal C: Particles and Fields-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleEvidence for tt¯tt¯ production in the multilepton final state in proton–proton collisions at √s = 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1140/epjc/s10052-020-08509-3-
dc.identifier.hkuros320999-
dc.identifier.volume80-
dc.identifier.issue11-
dc.identifier.spagearticle no. 1085-
dc.identifier.epagearticle no. 1085-
dc.identifier.isiWOS:000595710000001-
dc.publisher.placeGermany-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats