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arXiv 1110.6901hep-thhep-ph
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杂种优势Orbifolds中U(1)s的动力学混合

Kinetic Mixing of U(1)s in Heterotic Orbifolds

Mark Goodsell, Saul Ramos-Sanchez, Andreas Ringwald

摘要:

研究了杂化轨道紧化玻色子公式中无质量U(1)规范对称性之间的动力学混合。对于非素Z_N可分解的轨道折叠,我们找到了一个关于N=2的子扇区性质的混合的简单表达式,这有助于理解在什么条件下混合可以发生。用这个工具分析了Z_6-II杂种优势轨道折叠,发现即使不包括Wilson线也存在非零混合。我们发现,一些半现实的模型的迷你景观承认超对称真空与超荷之间的混合和一个额外的U(1),它可以在低能量被打破。最后,我们讨论了一些现象学吸引人的可能性,隐藏的光子在杂合orbifolds允许。

英文摘要:

We study kinetic mixing between massless U(1) gauge symmetries in the bosonic formulation of heterotic orbifold compactifications. For non-prime Z_N factorisable orbifolds, we find a simple expression of the mixing in terms of the properties of the N=2 subsectors, which helps understand under what conditions mixing can occur. With this tool, we analyse Z_6-II heterotic orbifolds and find non-vanishing mixing even without including Wilson lines. We show that some semi-realistic models of the Mini-Landscape admit supersymmetric vacua with mixing between the hypercharge and an additional U(1), which can be broken at low energies. We finally discuss some phenomenologically appealing possibilities that hidden photons in heterotic orbifolds allow.

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