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arXiv 0910.3370hep-ph
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超对称Extra U(1)模型的S_4 x Z_2味对称性

S_4 x Z_2 Flavor Symmetry in Supersymmetric Extra U(1) Model

Y. Daikoku, H. Okada

摘要:

我们提出了一个具有非阿贝尔离散味对称性(S_4群)的E_6启发超对称模型,即SU(3)_c x SU(2)_W x U(1)_Y x U(1)_X x S_4 x Z_2.在我们的方案中,附加的阿贝尔规范对称性U(1)_X不仅解决了最小超对称标准模型(MSSM)中的μ问题,而且还需要新的奇异场,这些奇异场在解决味之谜中起着重要的作用。如果我们的奇异夸克能嵌入到对应于代数的S_4三重态中,我们发现危险的质子衰变能被很好地抑制。因此,可以预期,在SM(标准模型)轻子和夸克的产生结构可以理解为一个新的系统,以稳定的质子在超对称标准模型(SUSY)。此外,由于离散的非阿贝尔对称性本身的性质,我们的模型的汤川耦合常数大大减少。在本文中,我们分别给出了夸克扇区和轻子扇区模型的两个预测例子。

英文摘要:

We propose a E_6 inspired supersymmetric model with a non-Abelian discrete flavor symmetry (S_4 group); that is, SU(3)_c x SU(2)_W x U(1)_Y x U(1)_X x S_4 x Z_2. In our scenario, the additional abelian gauge symmetry; U(1)_X, not only solves the mu-problem in the minimal Supersymmetric Standard Model(MSSM), but also requires new exotic fields which play an important role in solving flavor puzzles. If our exotic quarks can be embedded into a S_4 triplet, which corresponds to the number of the generation, one finds that dangerous proton decay can be well-suppressed. Hence, it might be expected that the generation structure for lepton and quark in the SM(Standard Model) can be understood as a new system in order to stabilize the proton in a supersymemtric standard model (SUSY). Moreover, due to the nature of the discrete non-Abelian symmetry itself, Yukawa coupling constants of our model are drastically reduced. In our paper, we show two predictive examples of the models for quark sector and lepton sector, respectively.

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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