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arXiv 1002.4336hep-lathep-ph
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手征不变格点Higgs-Yukawa模型的希格斯玻色子质量上限

Upper Higgs boson mass bounds from a chirally invariant lattice Higgs-Yukawa model

P. Gerhold, K. Jansen

摘要:

我们建立了截断依赖的希格斯玻色子质量上限通过直接晶格计算的手征不变的格点Higgs-Yukawa模型的框架内模拟相同的手征Yukawa耦合结构的Higgs-fermion扇区的标准模型。正如希格斯扇区的平凡性图片所预期的那样,我们观察到上限质量随着截止参数$Λ$的升高而降低。此外,通过与纯$Φ^4$理论中相应的分析比较,探讨了费米子对上质量束缚的贡献的强度。

英文摘要:

We establish the cutoff-dependent upper Higgs boson mass bound by means of direct lattice computations in the framework of a chirally invariant lattice Higgs-Yukawa model emulating the same chiral Yukawa coupling structure as in the Higgs-fermion sector of the Standard Model. As expected from the triviality picture of the Higgs sector, we observe the upper mass bound to decrease with rising cutoff parameter $Λ$. Moreover, the strength of the fermionic contribution to the upper mass bound is explored by comparing to the corresponding analysis in the pure $Φ^4$-theory.

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