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arXiv 1102.2113hep-phhep-th
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不动点条件下的电弱S和T参数

The electroweak S and T parameters from a fixed point condition

M. Fabbrichesi, R. Percacci, A. Tonero, L. Vecchi

摘要:

我们考虑不含希格斯玻色子的标准模型,其中Goldstone模由非线性西格玛模型描述.本文研究了西格玛模型耦合f和电弱参数S、T的重整化群流。耦合在高能量时达到固定点的条件使得f和T的低能量值是任意的(有待实验确定),并将S固定为与电弱精确数据兼容的值。

英文摘要:

We consider the standard model without the Higgs boson, where the Goldstone modes are described by a nonlinear sigma model. We study the renormalization group flow of the sigma model coupling f and of the electroweak parameters S and T. The condition that the couplings reach a fixed point at high energy leaves the low energy values of f and T arbitrary (to be determined experimentally) and fixes S to a value compatible with electroweak precision data.

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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