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arXiv 0705.0443hep-ph
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与共形规范扇区耦合的Higgs和Top夸克

Higgs and Top quark coupled with a conformal gauge sector

Haruhiko Terao

摘要:

我们提出了一个超越标准模型的动力学方案,在该方案中,Higgs质量参数的辐射修正被抑制,这是由于通过与额外的规范扇区的共形不变耦合引起的大的反常尺寸。那么反常维度也抑制了希格斯场的汤川耦合。然而,大的顶Yukawa耦合可以通过共形规范扇区的顶夸克和费米子之间的混合有效地产生。这种情况被发现预测一个相当重的希格斯质量约500 GeV。我们提出了一个明确的模型,并显示一致的电弱精密测量的S和T参数以及Z玻色子衰变宽度。

英文摘要:

We propose a dynamical scenario beyond the standard model, in which the radiative correction to the Higgs mass parameter is suppressed due to a large anomalous dimension induced through a conformal invariant coupling with an extra gauge sector. Then the anomalous dimension also suppresses the Yukawa couplings of the Higgs field. However, the large top Yukawa coupling can be generated effectively through mixing among top quarks and the fermions of the conformal gauge sector. This scenario is found to predict a fairly heavy Higgs mass of about 500 GeV. We present an explicit model and show consistency with the Electro-Weak precision measurements of the S and T parameters as well as the Z boson decay width.

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