Gauge Mediated Mini-Split

Abstract

We propose a simple model of split supersymmetry from gauge mediation. This model features gauginos that are parametrically a loop factor lighter than scalars, accommodates a Higgs boson mass of 125 GeV, and incorporates a simple solution to the $\mu -b_{\mu }$ problem. The gaugino mass suppression can be understood as resulting from collective symmetry breaking. Imposing collider bounds on $\mu$ and requiring viable electroweak symmetry breaking implies small $a$-terms and small $\tan \beta$ -- the stop mass ranges from $10^5$ to $10^8 \mbox{ GeV}$. In contrast with models with anomaly + gravity mediation (which also predict a one-loop loop suppression for gaugino masses), our gauge mediated scenario predicts aligned squark masses and a gravitino LSP. Gluinos, electroweakinos and Higgsinos can be accessible at the LHC and/or future colliders for a wide region of the allowed parameter space.

16 pages, 1 figure. Journal version, references added

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Cited by in corpus (5)

• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• Partially Natural Two Higgs Doublet Models
• Dark Matter in Very Supersymmetric Dark Sectors
• Gauge Mediation at LHC: status and prospects
• Light Higgsino as the tail of the $\mu$-$B_{\mu }$ solution