期刊
PHYSICAL REVIEW D
卷 80, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.105002
关键词
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资金
- DOE [DE-FG02-91ER40626]
- GNSF [07_462_4-270]
- Bartol Research Institute
The little hierarchy problem encountered in the constrained minimal supersymmetric model can be ameliorated in supersymmetric models based on the gauge symmetry G(422)equivalent to SU(4)(c)xSU(2)(L)xSU(2)(R). The standard assumption in the constrained minimal supersymmetric model [and in SU(5) and SO(10)] of universal gaugino masses can be relaxed in SU(4)(c)xSU(2)(L)xSU(2)(R), and this leads to a significant improvement in the degree of fine-tuning required to implement radiative electroweak breaking in the presence of a characteristic supersymmetry breaking scale of around a TeV. Examples of Higgs and sparticle mass spectra realized with 10% fine-tuning are presented.
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