Preserving the validity of the two-Higgs-doublet model up to the Planck scale

Ferreira, P. M.; Haber, Howard E.; Santos, Edward

doi:10.1103/physrevd.92.033003

Cited by 36 publications

(31 citation statements)

References 100 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are arguments concerning vacuum stability which might be relevant to constrain the set up we just described, see [360][361][362][363][364][365],…”

Section: Resultsmentioning

confidence: 99%

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

2018

View full text Add to dashboard Cite

We review how the muon anomalous magnetic moment (g − 2) and the quest for lepton flavor violation are intimately correlated. Indeed the decay µ → eγ is induced by the same amplitude for different choices of in-and outgoing leptons. In this work, we try to address some intriguing questions such as:Which hierarchy in the charged lepton sector one should have in order to reconcile possible signals coming simultaneously from g − 2 and lepton flavor violation?What can we learn if the g − 2 anomaly is confirmed by the upcoming flagship experiments at FERMILAB and J-PARC, and no signal is seen in the decay µ → eγ in the foreseeable future? On the other hand, if the µ → eγ decay is seen in the upcoming years, do we need to necessarily observe a signal also in g − 2?.In this attempt, we generally study the correlation between these observables in a detailed analysis of simplified models. We derive master integrals and

show abstract

“…There are arguments concerning vacuum stability which might be relevant to constrain the set up we just described, see [360][361][362][363][364][365],…”

Section: Resultsmentioning

confidence: 99%

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

2018

View full text Add to dashboard Cite

show abstract

“…For renormalization group studies, especially the role of Higgs self-couplings is crucial and has been studied in the literature, in the SM (see for instance [7,40]) as well as in the 2HDM [5,[41][42][43][44][45][46][47], because these quartic couplings tend to destabilize the Higgs potential at some µ high . Since a break-down of stability would mean that our theory would lose validity beyond a certain scale, we want to impose a stable Higgs potential beyond µ ew as a constraint on all couplings.…”

Section: Jhep11(2015)052mentioning

confidence: 99%

Global fits of the two-loop renormalized Two-Higgs-Doublet model with soft Z 2 breaking

Chowdhury

Eberhardt

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:We determine the next-to-leading order renormalization group equations for the Two-Higgs-Doublet model with a softly broken Z 2 symmetry and CP conservation in the scalar potential. We use them to identify the parameter regions which are stable up to the Planck scale and find that in this case the quartic couplings of the Higgs potential cannot be larger than 1 in magnitude and that the absolute values of the S-matrix eigenvalues cannot exceed 2.5 at the electroweak symmetry breaking scale. Interpreting the 125 GeV resonance as the light CP -even Higgs eigenstate, we combine stability constraints, electroweak precision and flavour observables with the latest ATLAS and CMS data on Higgs signal strengths and heavy Higgs searches in global parameter fits to all four types of Z 2 symmetry. We quantify the maximal deviations from the alignment limit and find that in type II and Y the mass of the heavy CP -even (CP -odd) scalar cannot be smaller than 340 GeV (360 GeV). Also, we pinpoint the physical parameter regions compatible with a stable scalar potential up to the Planck scale. Motivated by the question how natural a Higgs mass of 125 GeV can be in the context of a Two-Higgs-Doublet model, we also address the hierarchy problem and find that the Two-Higgs-Doublet model does not offer a perturbative solution to it beyond 5 TeV.

show abstract

“…Can such a balance between the bosonic and fermionic effects be struck that indeed leads to an additional minimum of the scalar potential, while prolonging the lifetime of the EW vacuum to a safe level? • Studies on the high-scale validity of a 2HDM in the past were mostly confined to investigating absolute stability [7][8][9][10][11][12][13]. Some studies connecting higher dimensional operators to Higgs metastability have occurred in the past [14,15].…”

Section: Introductionmentioning

confidence: 99%

High-scale validity of a two-Higgs-doublet scenario: metastability included

Chakrabarty

Mukhopadhyaya

2017

Eur. Phys. J. C

View full text Add to dashboard Cite

We identify regions in a Type-II two-Higgsdoublet model which correspond to a metastable electroweak vacuum with lifetime larger than the age of the universe. We analyse scenarios which retain perturbative unitarity up to grand unification and Planck scales. Each point in the parameter space is restricted using data from the Large Hadron Collider (LHC) as well as flavour and precision electroweak constraints. We find that substantial regions of the parameter space are thus identified as corresponding to metastability, which complement the allowed regions for absolute stability, for top quark mass at the high as well as low end of its currently allowed range. Thus, a two-Higgs-doublet scenario with the electroweak vacuum, either stable or metastable, can sail through all the way up to the Planck scale without facing any contradiction.

show abstract

Preserving the validity of the two-Higgs-doublet model up to the Planck scale

Cited by 36 publications

References 100 publications

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

Global fits of the two-loop renormalized Two-Higgs-Doublet model with soft Z 2 breaking

High-scale validity of a two-Higgs-doublet scenario: metastability included

Contact Info

Product

Resources

About