MIXED AXION-NEUTRALINO DARK MATTER IN THE SUPERSYMMETRIC DFSZ MODEL

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dc.contributor.advisorBaer, Howard
dc.contributor.authorSerce, Hasan
dc.contributor.committeeMemberKantowski, Ronald
dc.contributor.committeeMemberKao, Chung
dc.contributor.committeeMemberRalf, Schmidt
dc.contributor.committeeMemberPatrick, Skubic
dc.date.accessioned2016-08-01T18:23:11Z
dc.date.available2016-08-01T18:23:11Z
dc.date.issued2016
dc.date.manuscript2016-06-30
dc.description.abstractThe lack of evidence for weak scale supersymmetry (SUSY) from LHC Run-I at √s = 8 TeV and Run-II with √s = 13 TeV results have caused a paradigm shift in expected phenomenology of SUSY models. The spectrum of sparticle (SUSY particle) masses has been pushed to a higher, multi-TeV energy scale. The spectrum was predicted to lie not too far beyond the weak scale typified by Z and W masses based on naturalness in pre-LHC years. In such models, the neutralino (the lightest SUSY particle) can account for the measured dark matter (DM) relic density. At the higher mass scale, correct relic density can only be obtained by enhanced annihilations or more naturally, by a low μ term. Although it has not been discovered at the colliders yet, SUSY still remains the most attractive solution for the big hierarchy problem. In this thesis, I investigate SUSY models with mixed axion-neutralino dark matter with two MSSM scenarios: CMSSM (with a standard neutralino overabundance) and NUHM2 (with a standard neutralino underabundance). The NUHM2 model with a low μ gives a natural SUSY spectrum defined by the ∆EW measure. Phenomenological implications of the two component dark matter scenarios are studied in detail.en_US
dc.identifier.urihttp://hdl.handle.net/11244/44597
dc.languageen_USen_US
dc.subjectDark Matteren_US
dc.subjectSupersymmetryen_US
dc.subjectNaturalnessen_US
dc.subjectAxionen_US
dc.subjectWIMPen_US
dc.subjectNeutralinoen_US
dc.subjectDFSZen_US
dc.subjectCosmologyen_US
dc.thesis.degreePh.D.en_US
dc.titleMIXED AXION-NEUTRALINO DARK MATTER IN THE SUPERSYMMETRIC DFSZ MODELen_US
ou.groupCollege of Arts and Sciences::Homer L. Dodge Department of Physics and Astronomyen_US

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