Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at ?s=13TeV with the ATLAS detector

dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2022-11-17T08:33:37Z
dc.date.available2022-11-17T08:33:37Z
dc.date.issued2022-11
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractAbstract: A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to 139fb-1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS using the channel with two leptons in the final state. The observed lower limit on the mass of the type-III seesaw heavy leptons combining two, three and four lepton channels together is 910 GeV at the 95% confidence level. © 2022, CERN for the benefit of the ATLAS Collaboration.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-022-10785-0en_US
dc.identifier.issn1434-6044
dc.identifier.scopus2-s2.0-85141210757en_US
dc.identifier.urihttps://hdl.handle.net/11411/4681
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-022-10785-0
dc.identifier.wosWOS:000878749900004en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue11en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors100+en_US
dc.publisherInstitute for Ionicsen_US
dc.relation.ispartofEuropean Physical Journal Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.titleSearch for type-III seesaw heavy leptons in leptonic final states in pp collisions at ?s=13TeV with the ATLAS detectoren_US
dc.typeArticleen_US
dc.volume82en_US

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