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arXiv 0909.1615hep-phhep-th
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离散R对称与低能超对称

Discrete R Symmetries and Low Energy Supersymmetry

Michael Dine, John Kehayias

摘要:

如果自然界表现出低能量超对称性,离散(非$Z_2$)R对称性很可能发挥重要作用。在本文中,我们探讨这样的对称性。我们推广高吉诺凝聚,构建大类的模型是经典的规模不变,并自发地打破离散R对称性(但不是超对称性)。断裂的序参量包括手性单重态。这些简化了亚稳态动力学超对称性破缺模型的构造。我们解释说,在规范调解,宇宙学常数的问题,使“改造”特别自然-几乎势在必行。我们描述了新的模型类,有趣的尺度超对称性破缺,并允许简单的解决方案的$μ$问题。我们认为,表现出这样的R对称性的模型可以很容易地解决不仅是四维运营商和质子衰变的问题,但也维5运营商。另一方面,在“引力中介”理论中,R对称性的破缺通常是$M_p$阶的,需要R宇称来抑制四维$B$和$L$违反算子,而五维算子仍然是有问题的。

英文摘要:

If nature exhibits low energy supersymmetry, discrete (non-$Z_2$) R symmetries may well play an important role. In this paper, we explore such symmetries. We generalize gaugino condensation, constructing large classes of models which are classically scale invariant, and which spontaneously break discrete R symmetries (but not supersymmetry). The order parameters for the breaking include chiral singlets. These simplify construction of models with metastable dynamical supersymmetry breaking. We explain that in gauge mediation, the problem of the cosmological constant makes "retrofitting" particularly natural -- almost imperative. We describe new classes of models, with interesting scales for supersymmetry breaking, and which allow simple solutions of the $μ$ problem. We argue that models exhibiting such R symmetries can readily solve not only the problem of dimension four operators and proton decay, but also dimension five operators. On the other hand, in theories of "gravity mediation", the breaking of R symmetry is typically of order $M_p$, R parity is required to suppress dimension four $B$ and $L$ violating operators, and dimension five operators remain problematic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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