Show simple item record

dc.contributor.advisorJohns, Kenneth A.en
dc.contributor.authorVeatch, Jason Robert
dc.creatorVeatch, Jason Roberten
dc.date.accessioned2015-09-24T18:36:36Zen
dc.date.available2015-09-24T18:36:36Zen
dc.date.issued2015en
dc.identifier.urihttp://hdl.handle.net/10150/578734en
dc.description.abstractMany Beyond Standard Model theories predict particles that couple strongly to top/anti-top quark pairs. This makes tt(bar) a promising signature for new physics searches. The analysis presented in this dissertation uses 20.3 fb⁻¹ of √s = 8 TeV pp collision data from the ATLAS experiment to search for evidence of new physics in the single-lepton plus jets tt(bar) decay channel. This is done by requiring one electron or muon, large missing transverse momentum and additional hadronic jets. The tt(bar) system is reconstructed using techniques optimized for either resolved or boosted event topologies. The results of the analysis are used to set upper limits on the production cross-section times branching ratio for heavy resonances decaying to tt(bar). These limits are interpreted in the context of several benchmark models including the leptophobic topcolor Z', the Randall-Sundrum Kaluza-Klein gluon (gKK), the Randall-Sundrum Kaluza-Klein graviton (GKK) and a spin-0 scalar particle.
dc.language.isoen_USen
dc.publisherThe University of Arizona.en
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
dc.subjectresonancesen
dc.subjectttbaren
dc.subjectPhysicsen
dc.subjectATLASen
dc.titleA Search For New Physics Using tt(bar) Resonances in the Lepton Plus Jets Channel at √(s) = 8 TeV in 20 fb⁻¹ of pp Collision Data at the ATLAS Experimenten_US
dc.typetexten
dc.typeElectronic Dissertationen
thesis.degree.grantorUniversity of Arizonaen
thesis.degree.leveldoctoralen
dc.contributor.committeememberJohns, Kenneth A.en
dc.contributor.committeememberCheu, Elliot C.en
dc.contributor.committeememberShupe, Michael A.en
dc.contributor.committeememberToussaint, William D.en
dc.contributor.committeememberVarnes, Erich W.en
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplinePhysicsen
thesis.degree.namePh.D.en
refterms.dateFOA2018-04-26T11:16:11Z
html.description.abstractMany Beyond Standard Model theories predict particles that couple strongly to top/anti-top quark pairs. This makes tt(bar) a promising signature for new physics searches. The analysis presented in this dissertation uses 20.3 fb⁻¹ of √s = 8 TeV pp collision data from the ATLAS experiment to search for evidence of new physics in the single-lepton plus jets tt(bar) decay channel. This is done by requiring one electron or muon, large missing transverse momentum and additional hadronic jets. The tt(bar) system is reconstructed using techniques optimized for either resolved or boosted event topologies. The results of the analysis are used to set upper limits on the production cross-section times branching ratio for heavy resonances decaying to tt(bar). These limits are interpreted in the context of several benchmark models including the leptophobic topcolor Z', the Randall-Sundrum Kaluza-Klein gluon (gKK), the Randall-Sundrum Kaluza-Klein graviton (GKK) and a spin-0 scalar particle.


Files in this item

Thumbnail
Name:
azu_etd_14187_sip1_m.pdf
Size:
9.953Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record