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dc.contributor.advisorCheu, Elliotten_US
dc.contributor.authorLampen, Caleb Parnell
dc.creatorLampen, Caleb Parnellen_US
dc.date.accessioned2013-06-04T17:16:50Z
dc.date.available2013-06-04T17:16:50Z
dc.date.issued2013
dc.identifier.urihttp://hdl.handle.net/10150/293392
dc.description.abstractA search for evidence of supersymmetry with a three lepton and missing transverse energy signature is presented. This signature is a possible final state from the associated production of a chargino and a neutralino, two particles predicted by supersymmetry. The study is performed on 2.06 fb⁻¹ of 7 TeV center of mass energy proton-proton collisions, recorded with the ATLAS experiment at the Large Hadron Collider in 2011. A multivariate analysis is utilized, implementing a boosted decision tree classifier using lepton p(T), missing transverse energy, dilepton mass, and the razor variable R as inputs. No significant excess over the Standard Model prediction is observed, and upper limits are placed on the cross section times branching ratio of simplified models across a mass parameter space.
dc.language.isoenen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subjectMultivariateen_US
dc.subjectPhysicsen_US
dc.subjectSupersymmetryen_US
dc.subjectleptonen_US
dc.titleSearch for a Three Lepton and Missing Transverse Energy Signature of Supersymmetry Using a Multivariate Analysisen_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.leveldoctoralen_US
dc.contributor.committeememberJohns, Kennethen_US
dc.contributor.committeememberSu, Shufangen_US
dc.contributor.committeememberToussaint, Douglasen_US
dc.contributor.committeememberVarnes, Erichen_US
dc.contributor.committeememberCheu, Elliotten_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.namePh.D.en_US
refterms.dateFOA2018-08-30T06:23:19Z
html.description.abstractA search for evidence of supersymmetry with a three lepton and missing transverse energy signature is presented. This signature is a possible final state from the associated production of a chargino and a neutralino, two particles predicted by supersymmetry. The study is performed on 2.06 fb⁻¹ of 7 TeV center of mass energy proton-proton collisions, recorded with the ATLAS experiment at the Large Hadron Collider in 2011. A multivariate analysis is utilized, implementing a boosted decision tree classifier using lepton p(T), missing transverse energy, dilepton mass, and the razor variable R as inputs. No significant excess over the Standard Model prediction is observed, and upper limits are placed on the cross section times branching ratio of simplified models across a mass parameter space.


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