Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at ?s = 13 TeV
| dc.authorid | 0000-0002-9007-8260 | en_US |
| dc.contributor.author | Yetkin, Elif Aslı | |
| dc.date.accessioned | 2021-05-07T08:05:44Z | |
| dc.date.available | 2021-05-07T08:05:44Z | |
| dc.date.issued | 2019-11-01 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| dc.description.abstract | A search for the standard model production of four top quarks (pp ? t t ¯ t t ¯) is reported using single-lepton plus jets and opposite-sign dilepton plus jets signatures. Proton-proton collisions are recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV in a sample corresponding to an integrated luminosity of 35.8 fb?1. A multivariate analysis exploiting global event and jet properties is used to discriminate t t ¯ t t ¯ from t t ¯ production. No significant deviation is observed from the predicted background. An upper limit is set on the cross section for t t ¯ t t ¯ production in the standard model of 48 fb at 95% confidence level. When combined with a previous measurement by the CMS experiment from an analysis of other final states, the observed signal significance is 1.4 standard deviations, and the combined cross section measurement is 13?9+11 fb. The result is also interpreted in the framework of effective field theory. | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1007/JHEP11(2019)082 | en_US |
| dc.identifier.issn | 1126-6708 | |
| dc.identifier.scopus | 2-s2.0-85076108268 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/3645 | |
| dc.identifier.uri | https://doi.org/10.1007/JHEP11(2019)082 | |
| dc.identifier.wos | WOS:000514864800001 | en_US |
| dc.identifier.wosquality | N/A | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 11 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 200+ | en_US |
| dc.publisher | SPRINGER | en_US |
| dc.relation.ispartof | Journal of High Energy Physics | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.snmz | 20240718_Mükerrer | |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.subject | Top physics | en_US |
| dc.title | Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at ?s = 13 TeV | en_US |
| dc.type | Article | en_US |
