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arXiv · 1512.06128

Gauge Mediated Mini-Split

Timothy Cohen·Nathaniel Craig·Simon Knapen
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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 $μ-b_μ$ problem. The gaugino mass suppression can be understood as resulting from collective symmetry breaking. Imposing collider bounds on $μ$ and requiring viable electroweak symmetry breaking implies small $a$-terms and small $\tan β$ -- 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.

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Timothy Cohen, Nathaniel Craig, Simon Knapen. 2016-03-28. Gauge Mediated Mini-Split. https://doi.org/10.1007/jhep03(2016)103

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