Vacuum stability and supersymmetry at high scales with two Higgs doublets

Bagnaschi, Emanuele; Brümmer, Felix; Buchmüller, W.; Voigt, Alexander; Weiglein, G.

doi:10.1007/jhep03(2016)158

Cited by 44 publications

(65 citation statements)

References 46 publications

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“…In the light Higgs case we restrict |μ| ≤ 3Mq 3 , thus allowing μ 15 TeV for very large third generation squark masses Mq 3 ∼ 5 TeV. Parameter points with more extreme values of |μ/Mq 3 | beyond ∼3 often face severe constraints from vacuum stability requirements [78][79][80][81][82][83][84][85][86] (for a recent analysis see also Ref. [87]).…”

Section: Sampling Of the Parameter Spacementioning

confidence: 99%

The light and heavy Higgs interpretation of the MSSM

et al. 2017

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We perform a parameter scan of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with eight parameters taking into account the experimental Higgs boson results from Run I of the LHC and further lowenergy observables. We investigate various MSSM interpretations of the Higgs signal at 125 GeV. First, we consider the case where the light CP-even Higgs boson of the MSSM is identified with the discovered Higgs boson. In this case it can impersonate the SM Higgs-like signal either in the decoupling limit, or in the limit of alignment without decoupling. In the latter case, the other states in the Higgs sector can also be light, offering good prospects for upcoming LHC searches and for searches at future colliders. Second, we demonstrate that the heavy CP-even Higgs boson is still a viable candidate to explain the Higgs signal -albeit only in a highly constrained parameter region, that will be probed by LHC searches for the CP-odd Higgs boson and the charged Higgs boson in the near future. As a guidance for such searches we provide new benchmark scenarios that can be employed to maximize the sensitivity of the experimental analysis to this interpretation. a

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Section: Sampling Of the Parameter Spacementioning

confidence: 99%

The light and heavy Higgs interpretation of the MSSM

et al. 2017

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“…It is interesting that such a model can be consistent with gauge coupling unification, which imposes constraints on tan β and the Higgs boson masses [49]. The presented model assumes that all the quarks and leptons arise as zero modes of bulk fields, caused by magnetic flux.…”

Section: Gut Model and Yukawa Couplingsmentioning

confidence: 99%

Flavor physics without flavor symmetries

Buchmüller

Patel

2018

Phys. Rev. D

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We quantitatively analyze a quark-lepton flavor model derived from a six-dimensional supersymmetric theory with SOð10Þ × Uð1Þ gauge symmetry, compactified on an orbifold with magnetic flux. Two bulk 16-plets charged under the Uð1Þ provide the three quark-lepton generations whereas two uncharged 10-plets yield two Higgs doublets. At the orbifold fixed points mass matrices are generated with rank one or two. Moreover, the zero modes mix with heavy vectorlike split multiplets. The model possesses no flavor symmetries. Nevertheless, there exist a number of relations between Yukawa couplings, remnants of the underlying grand unified theory symmetry and the wave function profiles of the zero modes, which lead to a prediction of the light neutrino mass scale, m ν 1 ∼ 10 −3 eV and heavy Majorana neutrino masses in the range from 10 12 to 10 14 GeV. The model successfully includes thermal leptogenesis.

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“…The minimal supersymmetric extension of the SM (MSSM) is a prominent example of BSM theories that features a Higgs sector with two Higgs doublets. In particular, if all supersymmetric partners are heavy, the MSSM can be treated as an effective 2HDM for energies far below the SUSY mass scale(s) [3][4][5][6]. Indeed, the 2HDM is one of the simplest low-energy effective Higgs models and could be the result of various UV-complete BSM theories, with or without Supersymmetry (SUSY).…”

Section: Introductionmentioning

confidence: 99%

Status of the charged Higgs boson in two Higgs doublet models

Arbey

Mahmoudi

Stål³

et al. 2018

Eur. Phys. J. C

173

168

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The existence of charged Higgs boson(s) is inevitable in models with two (or more) Higgs doublets. Hence, their discovery would constitute unambiguous evidence for new physics beyond the Standard Model (SM). Taking into account all relevant results from direct charged and neutral Higgs boson searches at LEP and the LHC, as well as the most recent constraints from flavour physics, we present a detailed analysis of the current phenomenological status of the charged Higgs sector in a variety of wellmotivated two Higgs doublet models (2HDMs). We find that charged Higgs bosons as light as 75 GeV can still be compatible with the combined data, although this implies severely suppressed charged Higgs couplings to all fermions. In more popular models, e.g. the 2HDM of Type II, we find that flavour physics observables impose a combined lower limit on the charged Higgs mass of M H ± 600 GeV -independent of tan β -which increases to M H ± 650 GeV for tan β < 1. We furthermore find that in certain scenarios, the signature of a charged Higgs boson decaying into a lighter neutral Higgs boson and a W boson provides a promising experimental avenue that would greatly complement the existing LHC search programme for charged Higgs boson(s).

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Vacuum stability and supersymmetry at high scales with two Higgs doublets

Cited by 44 publications

References 46 publications

The light and heavy Higgs interpretation of the MSSM

The light and heavy Higgs interpretation of the MSSM

Flavor physics without flavor symmetries

Status of the charged Higgs boson in two Higgs doublet models

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