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arXiv 0905.2986hep-phhep-th
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M理论中的CP破坏相及其对EDM的启示

CP-violating Phases in M-theory and Implications for EDMs

Gordon Kane, Piyush Kumar, Jing Shao

摘要:

我们证明,在有效的理论所产生的一类N=1的无通量紧致化的M-理论的G2流形上的低能超对称,CP违反阶段不出现在软破缺拉格朗日除了通过Yukawas出现在三线性参数。这样的机制也可能存在于其他弦紧化中;我们描述了足以使这种情况发生的性质。CP破坏是通过Yukawas产生的,因为软三线性矩阵一般不与Yukawa矩阵成比例。在所考虑的框架内,估计的理论上限的电偶极矩(EDM)的电子,中子和汞都在目前的实验范围内,可以在不久的将来进行探讨。

英文摘要:

We demonstrate that in effective theories arising from a class of N=1 fluxless compactifications of M-theory on a G2 manifold with low energy supersymmetry, CP-violating phases do not appear in the soft-breaking Lagrangian except via the Yukawas appearing in the trilinear parameters. Such a mechanism may be present in other string compactifications as well; we describe properties sufficient for this to occur. CP violation is generated via the Yukawas since the soft trilinear matrices are generically not proportional to the Yukawa matrices. Within the framework considered, the estimated theoretical upper bounds for electric dipole moments (EDM) of the electron, neutron and mercury are all within the current experimental limits and could be probed in the near future.

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