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arXiv 1102.4611hep-ph
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MSSM中的离散对称性

Discrete Symmetries in the MSSM

Roland Schieren

摘要:

讨论了离散对称性,特别是阿贝尔对称性在粒子物理学的标准模型之外的物理学中的应用。提出了一种通过自发对称性破缺获得广义阿贝尔离散对称性的方法。此外,异常处理的路径积分的方法,特别注意异常取消通过格林-施瓦茨机制。所有这些都适用于最小超对称标准模型。发现了一个独特的Z_4 ^R对称性,它解决了μ问题和质子衰变问题,并允许将标准模型规范群嵌入到一个简单的群中,即Z_4 ^R与大统一相容。此外,在最小的风味违反的上下文中的风味问题得到解决。最后,我们给出了一个具有上述Z_4 ^R对称性和其它理想特征的弦论模型。

英文摘要:

The use of discrete symmetries, especially abelian ones, in physics beyond the standard model of particle physics is discussed. A method is developed how a general, abelian, discrete symmetry can be obtained via spontaneous symmetry breaking. In addition, anomalies are treated in the path integral approach with special attention to anomaly cancellation via the Green-Schwarz mechanism. All this is applied to the minimal supersymmetric standard model. A unique Z_4^R symmetry is discovered which solves the μ-problem as well as problems with proton decay and allows to embed the standard model gauge group into a simple group, i.e. the Z_4^R is compatible with grand unification. Also the flavor problem in the context of minimal flavor violation is addressed. Finally, a string theory model is presented which exhibits the mentioned Z_4^R symmetry and other desirable features.

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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