Abstract
We explore the possibility that the muon g − 2 anomaly and the nature of dark matter can be simultaneously explained within the framework of gaugino mediation, focusing on bino-like dark matter where the observed abundance is obtained via co-annihilations. The minimal model with non-universal gaugino masses is excluded by stau vacuum instability, although this constraint can be somewhat relaxed via the addition of a universal soft scalar mass (or B − L gaugino mediation). A more promising alternative is gaugino+Higgs mediation, which significantly raises the soft masses of the third generation sfermions leading to a split spectrum. In this framework, the muon g − 2 can be easily explained and the dark matter abundance obtained through either bino-wino or bino-slepton co-annihilations.
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ArXiv ePrint: 1811.12699
Hamamatsu professor. (Tsutomu T. Yanagida)
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Cox, P., Han, C., Yanagida, T.T. et al. Gaugino mediation scenarios for muon g − 2 and dark matter. J. High Energ. Phys. 2019, 97 (2019). https://doi.org/10.1007/JHEP08(2019)097
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DOI: https://doi.org/10.1007/JHEP08(2019)097