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arXiv 1002.4259hep-ph
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规范-Higgs统一中的模稳定化和IR膜动力学项

Modulus stabilization and IR-brane kinetic terms in gauge-Higgs unification

Nobuhito Maru, Yutaka Sakamura

摘要:

本文讨论了在弯曲时空中规范-Higgs统一模型中规范场的Casimir能模稳定化和IR膜动力学项的各种效应,其中Wilson线相位$θ_H$确定为$θ_H=π/2$ .我们发现,具有O(1)系数的膜动力学项是必要的模量稳定。另一方面,大的膜动力学项会使4D规范耦合偏离标准模型值,也会导致太轻的Kaluza-Klein(KK)模。在确保模量稳定的参数区域中,KK胶子出现在1 TeV以下,这勉强满足实验界限。在实现较小的$θ_H$值的模型中,允许的参数区域将被扩大。

英文摘要:

We discuss the modulus stabilization by the Casimir energy and various effects of IR-brane kinetic terms for the gauge fields in a gauge-Higgs unification model in the warped spacetime, where the Wilson line phase $θ_H$ is determined as $θ_H=π/2$. We find that the brane kinetic terms with O(1) coefficients are necessary for the modulus stabilization. On the other hand, large brane kinetic terms can deviate 4D gauge couplings from the standard model values and also cause too light Kaluza-Klein (KK) modes. In the parameter region that ensures the modulus stabilization, the KK gluon appears below 1 TeV, which marginally satisfies the experimental bound. The allowed parameter region will be enlarged in a model where a smaller value of $θ_H$ is realized.

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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