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dc.contributor.advisorMorii, Masahiro
dc.contributor.authorGonski, Julia Lynne
dc.date.accessioned2019-12-12T08:00:54Z
dc.date.created2019-05
dc.date.issued2019-05-17
dc.date.submitted2019
dc.identifier.citationGonski, Julia Lynne. 2019. Probing Natural Supersymmetry With Initial State Radiation: The Search For Stops And Higgsinos At ATLAS. Doctoral dissertation, Harvard University, Graduate School of Arts & Sciences.
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:42029459*
dc.description.abstractNatural supersymmetry has earned a unique focus in the search for new physics, in part because of its solution to the hierarchy problem. Minimizing fine tuning in this solution often puts the superpartners of the Higgs boson (higgsino) and top quark (stop) well within LHC reach. In the most natural scenario, the higgsino and stop masses are expected to be close to the masses of their Standard Model partners. Additionally, in the case of higgsinos with multiple mass eigenstates, these masses should be close to each other. Such small mass splittings are known as a compressed spectrum. In a decay chain this presents several experimental challenges, since the final state objects are very soft and there is little missing energy. In order to build a sensitive analysis around these difficulties, a variety of new techniques are utilized, including improvements with ISR-assisted topologies using the Recursive Jigsaw Reconstruction (RJR) method. In this thesis, these novel strategies and the idea of naturalness are used as a lens to interpret the status of stop and higgsino searches with ATLAS at the conclusion of the Large Hadron Collider Run II.
dc.description.sponsorshipPhysics
dc.format.mimetypeapplication/pdf
dc.language.isoen
dash.licenseLAA
dc.subjectparticle
dc.subjectcollider
dc.subjectLHC
dc.subjectATLAS
dc.subjectsupersymmetry
dc.subjectbeyond the Standard Model
dc.subjecthigh energy
dc.titleProbing Natural Supersymmetry With Initial State Radiation: The Search For Stops And Higgsinos At ATLAS
dc.typeThesis or Dissertation
dash.depositing.authorGonski, Julia Lynne
dc.date.available2019-12-12T08:00:54Z
thesis.degree.date2019
thesis.degree.grantorGraduate School of Arts & Sciences
thesis.degree.grantorGraduate School of Arts & Sciences
thesis.degree.levelDoctoral
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy
thesis.degree.nameDoctor of Philosophy
dc.contributor.committeeMemberFranklin, Melissa
dc.contributor.committeeMemberReece, Matthew
dc.type.materialtext
thesis.degree.departmentPhysics
thesis.degree.departmentPhysics
dash.identifier.vireo
dc.identifier.orcid0000-0003-2037-6315
dash.author.emailjgonski2872@gmail.com


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