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arXiv 0904.0700hep-ph
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Orbifolds上的Sphalerons

Sphalerons on Orbifolds

Amine Ahriche

摘要:

在本工作中,我们研究了5D背景中的电弱球对称子,其中第五维位于一个区间上。我们考虑了两种特殊的情形:平坦时空和S^{1}/ Z_{2}上紧化的反de Sitter时空。在我们的工作中,我们采用SU(2)规范-希格斯模型,其中规范场位于5D体中,但希格斯偶线被限制在一个膜中。我们发现,在这个模型的结果是接近的4D标准模型(SM)。翘曲效应的存在以及规范Kaluza-Klein模的沉重性使得结果与SM的结果非常接近。

英文摘要:

In this work, we study the electroweak sphalerons in a 5D background, where the fifth dimension lies on an interval. We consider two specific cases: flat space-time and the anti-de Sitter space-time compactified on S^{1}/Z_{2}. In our work, we take the SU(2) gauge-Higgs model, where the gauge fields reside in the 5D bulk; but the Higgs doublet is confined in one brane. We find that the results in this model are close to those of the 4D Standard Model (SM). The existence of the warp effect, as well as the heaviness of the gauge Kaluza-Klein modes make the results extremely close to the SM ones.

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