Search for direct top squark pair production in final states with two leptons in root s=13 TeV pp collisions with the ATLAS detector

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dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇelebi, Emre
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2020-11-04T10:12:23Z
dc.date.available2020-11-04T10:12:23Z
dc.date.issued2017-12-21
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractThe results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb(-1) of integrated luminosity from proton-proton collisions at root s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark (t) over tilde and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay (t) over tilde -> b (chi) over tilde (+/-)(1) into a b-quark and the lightest chargino with (chi) over tilde (+/-)(1) W (chi) over tilde (0)(1),the decay (t) over tilde -> t (chi) over tilde (0)(1) into an on-shell top quark and the lightest neutralino, the three-body decay (t) over tilde -> bW (chi) over tilde (0)(1) and the four-body decay (t) over tilde -> bl nu(chi) over tilde (0)(1). No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the (t) over tilde and (chi) over tilde (0)(1) masses. The results exclude at 95% confidence level (t) over tilde masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-017-5445-x
dc.identifier.pmid31985737en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://hdl.handle.net/11411/2420
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-017-5445-x
dc.identifier.wosWOS:000418591100004en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.issue12en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors200+en_US
dc.publisherSPRINGERen_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.subjectPROTON-PROTON COLLISIONSen_US
dc.subjectPRODUCTION CROSS-SECTIONen_US
dc.subjectGLUINO PRODUCTIONen_US
dc.subjectHADRON COLLIDERSen_US
dc.subjectMEASURING MASSESen_US
dc.subjectPROGRAMen_US
dc.subjectSUPERSYMMETRYen_US
dc.subjectEXTENSIONen_US
dc.subjectSPECTRUMen_US
dc.subjectSPHENOen_US
dc.titleSearch for direct top squark pair production in final states with two leptons in root s=13 TeV pp collisions with the ATLAS detector
dc.typeArticle
dc.volume77en_US

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