Light third-generation squarks from flavour gauge messengers

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dc.contributor.authorBrummer, Felix
dc.contributor.authorMcGarrie, Moritz
dc.contributor.authorWeiler, Andreas
dc.date.accessioned2015-07-28T13:02:27Z
dc.date.available2015-07-28T13:02:27Z
dc.date.issued2014-04-10
dc.description.abstractWe study models of gauge-mediated supersymmetry breaking with a gauged horizontal SU(3)F symmetry acting on the quark superfields. If SU(3)F is broken nonsupersymmetrically by F -term vacuum expectation values, the massive gauge bosons and gauginos become messengers for SUSY breaking mediation. These gauge messenger fields induce a flavour-dependent, negative contribution to the soft masses of the squarks at one loop. In combination with the soft terms from standard gauge mediation, one obtains large and degenerate first- and second-generation squark masses, while the stops and sbottoms are light. We discuss the implications of this mechanism for the superparticle spectrum and for flavour precision observables. We also provide an explicit realization in a model with simultaneous SUSY and SU(3)F breaking.en_ZA
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/10539/18155
dc.language.isoenen_ZA
dc.publisherSpringeren_ZA
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Physicsen_ZA
dc.subjectSupersymmetric Standard Modelen_ZA
dc.subjectSupersymmetry Breakingen_ZA
dc.subjectBeyond Standard Modelen_ZA
dc.titleLight third-generation squarks from flavour gauge messengersen_ZA
dc.typeArticleen_ZA
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