Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in root s=13 TeV pp collisions with the ATLAS detector

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dc.WoS.categoriesAstronomy & Astrophysics; Physics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2020-11-09T12:43:58Z
dc.date.available2020-11-09T12:43:58Z
dc.date.issued2016-09-19
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractThe results of a search for the top squark, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, jets, and missing transverse momentum are reported. The search uses the 2015 LHC pp collision data at a center-of-mass energy of root s = 13 TeV recorded by the ATLAS detector and corresponding to an integrated luminosity of 3.2 fb(-1). The analysis targets two types of signal models: gluino-mediated pair production of top squarks with a nearly mass-degenerate top squark and neutralino and direct pair production of top squarks, decaying to the top quark and the lightest neutralino. The experimental signature in both signal scenarios is similar to that of a top quark pair produced in association with large missing transverse momentum. No significant excess over the Standard Model background prediction is observed, and exclusion limits on gluino and top squark masses are set at 95% confidence level. The results extend the LHC run-1 exclusion limit on the gluino mass up to 1460 GeV in the gluino-mediated scenario in the high gluino and low top squark mass region and add an excluded top squark mass region from 745 to 780 GeV for the direct top squark model with a massless lightest neutralino. The results are also reinterpreted to set exclusion limits in a model of vectorlike top quarks.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1103/PhysRevD.94.052009en_US
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.scopus2-s2.0-84993869024en_US
dc.identifier.urihttps://hdl.handle.net/11411/2540
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.94.052009
dc.identifier.wosWOS:000383871400001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue5en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors100+en_US
dc.publisherAmer. Physical Soc.en_US
dc.relation.ispartofPhysical Review Den_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPAIR PRODUCTIONen_US
dc.subjectSUPERSYMMETRYen_US
dc.subjectWEAKen_US
dc.subjectEXTENSIONen_US
dc.subjectBREAKINGen_US
dc.subjectDECAYen_US
dc.subjectMASSen_US
dc.titleSearch for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in root s=13 TeV pp collisions with the ATLAS detectoren_US
dc.typeArticleen_US
dc.volume94en_US

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