Light Higgsino as the tail of the $\mu$-$B_\mu$ solution
| Autor: | Asano, Masaki, Yokozaki, Norimi |
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| Rok vydání: | 2016 |
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| Zdroj: | Phys. Rev. D 93, 095002 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.93.095002 |
| Popis: | Gauge mediation predicts 10 TeV or heavier squarks because such a heavy stop is required to explain the observed 125 GeV Higgs boson mass without a large trilinear soft mass term in the minimal supersymmetric standard model. Although such a high scale cannot be searched by the LHC directly, gauge mediation also predicts a hierarchy $\mu^2 \ll B_\mu$ by a simple and naive solution of the $\mu$ problem. We point out that this simple and naive way of generating the $\mu$ ($B_\mu$) term works in the case of 10 TeV or heavier squarks with a slight breaking of a GUT relation among messenger B-terms (or supersymmetric mass terms). Furthermore, the upper bound on the Higgsino mass is obtained from the observed Higgs boson mass, perturbativity of a relevant coupling, and conditions avoiding tachyonic sneutrinos and stop. It turns out that the light Higgsino of O(100) GeV is a promising signal of gauge mediation. Comment: 14 pages, 4 figures, typo corrected, references added |
| Databáze: | arXiv |
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