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dc.contributor.authorDemir, Durmuş Ali
dc.contributor.authorÜn, Cem Salih
dc.date.accessioned2017-04-25T07:34:05Z
dc.date.available2017-04-25T07:34:05Z
dc.date.issued2014-11
dc.identifier.citationDemir, D.A., and Ün, C.S. (2014). Stop on top: SUSY parameter regions and fine-tuning constraints. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(9). doi:10.1103/PhysRevD.90.095015en_US
dc.identifier.issn1550-7998
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.90.095015
dc.identifier.urihttp://hdl.handle.net/11147/5390
dc.description.abstractWe analyze minimal supersymmetric models in order to determine in what parameter regions with what amount of fine-tuning they are capable of accommodating the LHC-allowed top-stop degeneracy window. The stops must be light enough to enable Higgs naturalness yet heavy enough to induce a 125 GeV Higgs boson mass. These two constraints imply a large mass splitting. By an elaborate scan of the parameter space, we show that the stop-on-top scenario requires at least ΔCMSSM≃O(104) fine-tuning in the constrained minimal supersymmetric Standard Model (CMSSM). By relaxing the CMSSM parameter space with nonuniversal Higgs masses, we find that ΔNUHM1≃O(104). The CMSSM with a gravitino lightest supersymmetric particle works slightly better than the nonuniversal Higgs mass model. Compared to all these, the CMSSM with μ<0 and nonuniversal gauginos yields a much smaller fine-tuning Δμ,g≃O(100). Our results show that the gaugino sector can pave the road toward a more natural stop-on-top scenario.en_US
dc.description.sponsorshipTAEK CERN Project [CERN-A5.H2.P1.01-21 (DAD)]; National Science Foundation (OCI-1053575)en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionof10.1103/PhysRevD.90.095015en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHiggs bosonen_US
dc.subjectSupersymmetric modelsen_US
dc.subjectTop quarksen_US
dc.subjectStandard modelen_US
dc.subjectParticles(Nuclear physics)en_US
dc.titleStop on top: SUSY parameter regions and fine-tuning constraintsen_US
dc.typearticleen_US
dc.contributor.authorIDTR1918en_US
dc.contributor.iztechauthorDemir, Durmuş Ali
dc.relation.journalPhysical Review D - Particles, Fields, Gravitation and Cosmologyen_US
dc.contributor.departmentİYTE, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.identifier.volume90en_US
dc.identifier.issue9en_US
dc.identifier.wosWOS:000345691000004
dc.identifier.scopusSCOPUS:2-s2.0-84911923423


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