Abstract
Inspired by the phenomenological constraints, LHC supersymmetry and Higgs searches, dark matter search as well as string model building, we propose the electroweak supersymmetry around the electroweak scale: the squarks and/or gluinos are around a few TeV while the sleptons, sneutrinos, bino and winos are within 1 TeV. The higgsinos can be either heavy or light. We consider the bino as the dominant component of dark matter candidate, and the observed dark matter relic density is achieved via the neutralino–stau coannihilations. Considering the Generalized Minimal Supergravity (GmSUGRA), we show explicitly that electroweak supersymmetry can be realized, and gauge coupling unification can be preserved. With two scenarios, we study the viable parameter spaces that satisfy all the current phenomenological constraints, and we present the concrete benchmark points. Furthermore, we comment on the fine-tuning problem and LHC searches.
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Acknowledgements
This research was supported in part by the Natural Science Foundation of China under grant numbers 10821504 and 11075194 (T.C., J.L., T.L. and C.T.), and by the DOE grant DE-FG03-95-Er-40917 (T.L. and D.V.N.).
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Cheng, T., Li, J., Li, T. et al. Electroweak supersymmetry around the electroweak scale. Eur. Phys. J. C 73, 2322 (2013). https://doi.org/10.1140/epjc/s10052-013-2322-0
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DOI: https://doi.org/10.1140/epjc/s10052-013-2322-0