A low Fermi scale from a simple gaugino-scalar mass relation

Abstract

In supersymmetric extensions of the Standard Model, the Fermi scale of electroweak symmetry breaking is determined by the pattern of supersymmetry breaking. We present an example, motivated by a higher-dimensional GUT model, where a particular mass relation between the gauginos, third-generation squarks and Higgs fields of the MSSM leads to a Fermi scale smaller than the soft mass scale. This is in agreement with the measured Higgs boson mass. The mu parameter is generated independently of supersymmetry breaking, however the mu problem becomes less acute due to the little hierarchy between the soft mass scale and the Fermi scale as we will argue. The resulting superparticle mass spectra depend on the localization of quark and lepton fields in higher dimensions. In one case, the squarks of the first two generations as well as the gauginos and higgsinos can be in the range of the LHC. Alternatively, only the higgsinos may be accessible at colliders. The lightest superparticle is the gravitino.

19 pages, 4 figures; v2: matches journal version

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• High-Scale SUSY Breaking Models in light of the BICEP2 Result
• Hiding the little hierarchy problem in the NMSSM
• Naturalness-guided Gluino Mass Bound from the Minimal Mixed Mediation of SUSY Breaking
• Axion induced SUSY breaking and focus point gaugino mediation