Low-energy Supersymmetry Breaking Without the Gravitino Problem

Abstract

In models of low-energy gauge mediation, the observed Higgs mass is in tension with the cosmological limit on the gravitino mass $m_{3/2}\lesssim 16$ eV. We present an alternative mediation mechanism of supersymmetry breaking via a $U(1)$ $D$-term with an $E_6$-inspired particle content, which we call "vector mediation". The gravitino mass can be in the eV range. The sfermion masses are at the 10 TeV scale, while gauginos around a TeV. This mechanism also greatly ameliorates the $\mu$-problem.

arXiv comment5 pages, 3 figures

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• Cosmological Constraints on Light (but Massive) Relics
• Finding eV-scale Light Relics with Cosmological Observables
• Cosmologically Viable Low-energy Supersymmetry Breaking
• Ripples in Spacetime from Broken Supersymmetry
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• The Muon Smasher's Guide
• Super-Resonant Dark Matter
• Low-scale Gauge Mediation after LHC Run 2