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

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

2010-02-23

arxiv.org/abs/1002.4336v1

Physics

High Energy Physics

High Energy Physics - Lattice

25 pages, 9 figures

Scientific paper

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 $\Lambda$. Moreover, the strength of the fermionic contribution to the upper mass bound is explored by comparing to the corresponding analysis in the pure $\Phi^4$-theory.

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