Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at s =13 TeV with the ATLAS detector
| dc.authorid | 0000-0001-5050-8441 | en_US |
| dc.contributor.author | Çetin, Serkant Ali | |
| dc.date.accessioned | 2021-06-25T10:15:51Z | |
| dc.date.available | 2021-06-25T10:15:51Z | |
| dc.date.issued | 2019-03-01 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| dc.description.abstract | A search for four-top-quark production, tttt, 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. | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1103/PhysRevD.99.052009 | |
| dc.identifier.issn | 2470-0010 | |
| dc.identifier.scopus | 2-s2.0-85064385824 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/3894 | |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevD.99.052009 | |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 5 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 200+ | en_US |
| dc.publisher | American Physical Society | en_US |
| dc.relation.ispartof | PHYSICAL REVIEW D | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.title | Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at s =13 TeV with the ATLAS detector | |
| dc.type | Article | |
| dc.volume | 99 | en_US |
