A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment

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dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2021-02-02T07:04:30Z
dc.date.available2021-02-02T07:04:30Z
dc.date.issued2019-02-06
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractThis paper describes a strategy for a general search used by the ATLAS Collaboration to find potential indications of new physics. Events are classified according to their final state into many event classes. For each event class an automated search algorithm tests whether the data are compatible with the Monte Carlo simulated expectation in several distributions sensitive to the effects of new physics. The significance of a deviation is quantified using pseudo-experiments. A data selection with a significant deviation defines a signal region for a dedicated follow-up analysis with an improved background expectation. The analysis of the data-derived signal regions on a new dataset allows a statistical interpretation without the large look-elsewhere effect. The sensitivity of the approach is discussed using Standard Model processes and benchmark signals of new physics. As an example, results are shown for 3.2fb-1 of proton-proton collision data at a centre-of-mass energy of 13TeV collected with the ATLAS detector at the LHC in 2015, in which more than 700 event classes and more than 105 regions have been analysed. No significant deviations are found and consequently no data-derived signal regions for a follow-up analysis have been defined.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-019-6540-yen_US
dc.identifier.issn1434-6052
dc.identifier.issn1434-6044
dc.identifier.scopus2-s2.0-85061187220en_US
dc.identifier.urihttps://hdl.handle.net/11411/3202
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-019-6540-y
dc.identifier.wosWOS:000457998500007en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue2en_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.subjectPARTON DISTRIBUTIONSen_US
dc.subjectPLUS PLUSen_US
dc.subjectPHYSICSen_US
dc.subjectCOLLISIONSen_US
dc.subjectEXTENSIONen_US
dc.subjectLHCen_US
dc.titleA strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experimenten_US
dc.typeArticleen_US
dc.volume79en_US

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