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| Verfasst von: | Aaboud, Morad [VerfasserIn]  |
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| | Andrei, George Victor [VerfasserIn] |
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| | Antel, Claire [VerfasserIn] |
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| | Bolz, Arthur [VerfasserIn] |
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| | Brandt, Oleg [VerfasserIn] |
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| | Dunford, Monica [VerfasserIn] |
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| | Ferreira de Lima, Danilo Enoque [VerfasserIn] |
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| | Franchino, Silvia [VerfasserIn] |
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| | Jongmanns, Jan [VerfasserIn] |
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| | Kugel, Andreas [VerfasserIn] |
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| | Napolitano, Fabrizio [VerfasserIn] |
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| | S̜ahinsoy, Merve [VerfasserIn] |
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| | Schöning, André [VerfasserIn] |
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| | Schultz-Coulon, Hans-Christian [VerfasserIn] |
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| | Sosa Corral, David E. [VerfasserIn] |
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| | Spieker, Thomas [VerfasserIn] |
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| | Stamen, Rainer [VerfasserIn] |
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| | Starovoitov, Pavel [VerfasserIn] |
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| | Weber, Sebastian [VerfasserIn] |
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| | Wessels, Martin [VerfasserIn] |
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| | Yue, Xiaoguang [VerfasserIn] |
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| Titel: | Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13TeV with the ATLAS detector |
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| Körperschaft: | ATLAS Collaboration [VerfasserIn] |
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| Verf.angabe: | M. Aaboud et al. (ATLAS Collaboration) |
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| E-Jahr: | 2019 |
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| Jahr: | 26 March 2019 |
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| Umfang: | 36 S. |
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| Fussnoten: | Im Titel steht der Buchstabe s unter dem Wurzelsymbol ; The ATLAS Collaboration: M. Aaboud, V.Andrei, C. Antel, A.E. Bolz, O. Brandt, M. Dunford, D.E. Ferreira de Lima, S. Franchino, J. Jongmanns, A. Kugel, F. Napolitano, M. Sahinsoy, A. Schoening, H-C. Schultz-Coulon, D. Sosa, T.M. Spieker, R. Stamen, P. Starovoitov, S.M. Weber, M. Wessels, X. Yue [und weitere] ; Gesehen am 10.12.2020 |
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| Titel Quelle: | Enthalten in: Physical review |
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| Ort Quelle: | Woodbury, NY : Inst., 2016 |
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| Jahr Quelle: | 2019 |
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| Band/Heft Quelle: | 99(2019,5) Artikel-Nummer 052009, 36 Seiten |
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| ISSN Quelle: | 2470-0029 |
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| Abstract: | A search for four-top-quark production, $t\bar{t}t\bar{t}$, is presented. It is based on proton-proton collision data with a center-of-mass energy $\sqrt{s}$ = 13 TeV collected by the ATLAS detector at the Large Hadron Collider during the year 2015 and 2016, corresponding to an integrated luminosity of $36.1$ fb$^{-1}$. Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by ATLAS and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, upper limit on anomalous four-top-quark production cross section is set in the context of an effective field theory model. A search for four-top-quark production, tt¯tt¯, is presented. It is based on proton-proton collision data with a center-of-mass energy s=13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb-1. Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by the ATLAS Collaboration and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, an upper limit on the anomalous four-top-quark production cross section is set in the context of an effective field theory model. |
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| DOI: | doi:10.1103/PhysRevD.99.052009 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1103/PhysRevD.99.052009 |
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| | Volltext: http://inspirehep.net/record/1702263 |
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| | DOI: https://doi.org/10.1103/PhysRevD.99.052009 |
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| Datenträger: | Online-Ressource |
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| Sprache: | ger |
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| K10plus-PPN: | 1670314839 |
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| Verknüpfungen: | → Zeitschrift |
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Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13TeV with the ATLAS detector / Aaboud, Morad [VerfasserIn]; 26 March 2019 (Online-Ressource)
