Abstract
The LHC has strongly constrained models of supersymmetry with traditional missing energy signatures. We present a variety of models that realize the concept of Stealth Supersymmetry, i.e. models with R-parity in which one or more nearly-supersymmetric particles (a “stealth sector”) lead to collider signatures with only a small amount of missing energy. The simplest realization involves low-scale supersymmetry breaking, with an R-odd particle decaying to its superpartner and a soft gravitino. We clarify the stealth mechanism and its differences from compressed supersymmetry and explain the requirements for stealth models with high-scale supersymmetry breaking, in which the soft invisible particle is not a gravitino. We also discuss new and distinctive classes of stealth models that couple through a baryon portal or Z′ gauge interactions. Finally, we present updated limits on stealth supersymmetry in light of current LHC searches.
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Fan, J., Reece, M. & Ruderman, J.T. A stealth supersymmetry sampler. J. High Energ. Phys. 2012, 196 (2012). https://doi.org/10.1007/JHEP07(2012)196
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DOI: https://doi.org/10.1007/JHEP07(2012)196