Renormalization group analysis of Coleman-Weinberg symmetry breaking in two-Higgs models

Kreyerhoff, Georg; Rodenberg, R.

doi:10.1016/0370-2693(89)91203-3

Cited by 17 publications

(16 citation statements)

References 11 publications

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“…As discussed in Ref. [20], we do not expect these conditions to be satisfied at small scales, since we know that at small t the tree-level potential is not stable; the one-loop corrections are necessary ingredients for obtaining vacuum stability in this region.…”

Section: Phenomenological Constraintsmentioning

confidence: 97%

Classical scale invariance, the electroweak scale, and vector dark matter

2013

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We consider a classically scale-invariant extension of the standard model in which a dark, non-Abelian gauge symmetry is spontaneously broken via the Coleman-Weinberg mechanism. Higgs portal couplings between the dark and standard model sectors provide an origin for the Higgs mass squared parameter and, hence, the electroweak scale. We find that choices for model parameters exist in which the dark gauge multiplet is viable as dark matter.

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Section: Phenomenological Constraintsmentioning

confidence: 97%

Classical scale invariance, the electroweak scale, and vector dark matter

2013

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“…Since radiative corrections give rise to the modification of the couplings in the scalar potential, we need to require that the stability conditions (5) are valid for all energy scales up to a cut-off scale Λ. As is known, the stability conditions (5) can lead us to lower bounds on the couplings λ i [8], which in turn give rise to bounds on the masses of the Higgs fields. In addition, we require the perturbativity for the quartic couplings λ i in the scalar potential at all scales up to the cut-off scale Λ and unitarity at the cut-off scale [7].…”

Section: Straintsmentioning

confidence: 99%

Constraining parameter space in type-II two-Higgs doublet model in light of a 126 GeV Higgs boson

Cheon

Kang

2013

J. High Energ. Phys.

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We explore the implications of a 126 GeV Higgs boson indicated by the recent LHC results for two-Higgs doublet model (2HDM). Identifying the 126 GeV Higgs boson as either the lighter or heavier of CP even neutral Higgs bosons in 2HDM, we examine how the masses of Higgs fields and mixing parameters can be constrained by the theoretical conditions and experimental constraints.The theoretical conditions taken into account are the vacuum stability, perturbativity and unitarity required to be satisfied up to a cut-off scale. We also show how bounds on the masses of Higgs bosons and mixing parameters depend on the cut-off scale. In addition, we investigate whether the allowed regions of parameter space can accommodate particularly the enhanced di-photon signals, ZZ * and W W * decay modes of the Higgs boson, and examine the prediction of the signal strength of Zγ decay mode for the allowed regions of the parameter space.

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“…It is easy to see that λ 2 < 0 for α < 2.3, independently of the energy scale. But it should be positive in order to yield the potential bounded from below [4]. Thus the RG-invariant fine-tuning cannot be implemented when g b << g t .…”

Section: Vacuum Fine-tuning In the Two-higgs Modelmentioning

confidence: 99%

Fine tuning in one-higgs and two-higgs standard models

1995

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The fine-tuning principles are examined to predict the top-quark and Higgs-boson masses. The modification of the Veltman condition based on the compensation of vacuum energies is developed. It is implemented in the Standard Model and in its minimal extension with two Higgs doublets. The top-quark and Higgs-boson couplings are fitted in the SM for the lowest ultraviolet scale where the fine-tuning can be stable under rescaling. It yields the low-energy values m t ≃ 175GeV ; m H ≃ 210GeV .

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Renormalization group analysis of Coleman-Weinberg symmetry breaking in two-Higgs models

Cited by 17 publications

References 11 publications

Classical scale invariance, the electroweak scale, and vector dark matter

Classical scale invariance, the electroweak scale, and vector dark matter

Constraining parameter space in type-II two-Higgs doublet model in light of a 126 GeV Higgs boson

Fine tuning in one-higgs and two-higgs standard models

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