Weak radiative decays of the B meson and bounds on $$M_{H^\pm }$$ M H ± in the Two-Higgs-Doublet Model

Misiak, Mikołaj; Steinhauser, Matthias

doi:10.1140/epjc/s10052-017-4776-y

Cited by 293 publications

(311 citation statements)

References 82 publications

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“…The most relevant exclusion bounds on the m H AE − t β plane are those which arise from the B → X s γ measurements [63][64][65][66][67]. A 2σ bound on the charged Higgs mass of m H AE > 580 GeV for the models type II and Flipped that is almost independent of tan β was recently discussed in [67]. In all types of 2HDMs, there is also a hard bound on the charged Higgs mass coming from LEP, with the process e þ e − → H þ H − [68] which is approximately 100 GeV.…”

Section: The 2hdm Parameter Spacementioning

confidence: 99%

High scale impact in alignment and decoupling in two-Higgs-doublet models

et al. 2018

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The two-Higgs-doublet model (2HDM) provides an excellent benchmark to study physics beyond the Standard Model (SM). In this work, we discuss how the behavior of the model at high-energy scales causes it to have a scalar with properties very similar to those of the SM-which means the 2HDM can be seen to naturally favor a decoupling or alignment limit. For a type II 2HDM, we show that requiring the model to be theoretically valid up to a scale of 1 TeV, by studying the renormalization group equations (RGE) of the parameters of the model, causes a significant reduction in the allowed magnitude of the quartic couplings. This, combined with B-physics bounds, forces the model to be naturally decoupled. As a consequence, any nondecoupling limits in type II, like the wrong-sign scenario, are excluded. On the contrary, even with the very constraining limits for the Higgs couplings from the LHC, the type I model can deviate substantially from alignment. An RGE analysis similar to that made for type II shows, however, that requiring a single scalar to be heavier than about 500 GeV would be sufficient for the model to be decoupled. Finally, we show that the 2HDM is stable up to the Planck scale independently of which of the CP-even scalars is the discovered 125 GeV Higgs boson.

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Section: The 2hdm Parameter Spacementioning

confidence: 99%

High scale impact in alignment and decoupling in two-Higgs-doublet models

et al. 2018

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“…On the experimental side, compatibility with the EW precision constraints is guaranteed by requiring the oblique parameters S, T and U to be compatible with the SM fit [77] at 2σ, including the full correlations. The constraints from B physics observables [78][79][80][81][82] and the measurement of R b [79,83] have been taken into account, as well as the most recent bound of m H ± > ∼ 580 GeV for the type II and flipped (N)2HDM [82]. For the compatibility with the LHC Higgs data we require one of the scalar states, denoted by h 125 , to have a mass of 125.09 GeV and to match the observed LHC signal rates.…”

Section: Jhep12(2017)077mentioning

confidence: 99%

Gauge-independent renormalization of the N2HDM

Krause

López-Val

Mühlleitner

et al. 2017

J. High Energ. Phys.

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Abstract:The Next-to-Minimal 2-Higgs-Doublet Model (N2HDM) is an interesting benchmark model for a Higgs sector consisting of two complex doublet and one real singlet fields. Like the Next-to-Minimal Supersymmetric extension (NMSSM) it features light Higgs bosons that could have escaped discovery due to their singlet admixture. Thereby, the model allows for various different Higgs-to-Higgs decay modes. Contrary to the NMSSM, however, the model is not subject to supersymmetric relations restraining its allowed parameter space and its phenomenology. For the correct determination of the allowed parameter space, the correct interpretation of the LHC Higgs data and the possible distinction of beyond-the-Standard Model Higgs sectors higher order corrections to the Higgs boson observables are crucial. This requires not only their computation but also the development of a suitable renormalization scheme. In this paper we have worked out the renormalization of the complete N2HDM and provide a scheme for the gauge-independent renormalization of the mixing angles. We discuss the renormalization of the Z 2 soft breaking parameter m 2 12 and the singlet vacuum expectation value v S . Both enter the Higgs self-couplings relevant for Higgs-to-Higgs decays. We apply our renormalization scheme to different sample processes such as Higgs decays into Z bosons and decays into a lighter Higgs pair. Our results show that the corrections may be sizable and have to be taken into account for reliable predictions.

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“…To avoid the tree-level flavor changing neutral currents, it is common to impose a discrete Z 2 symmetry on the Higgs sector, with the Higgs doublets H 1 and H 2 being Z 2 odd and even, respectively. Thus, the CP conserving Higgs potential under Z 2 can be written as, bound ( 80 GeV) for tan β 2 [50]. For 2HDM-II, the analysis of B-decay measurement gives a stronger limit M H ± 580 GeV [50].…”

Section: The Model Setupmentioning

confidence: 99%

“…Thus, the CP conserving Higgs potential under Z 2 can be written as, bound ( 80 GeV) for tan β 2 [50]. For 2HDM-II, the analysis of B-decay measurement gives a stronger limit M H ± 580 GeV [50]. Thus, taking these into account, we set M ± = 500 GeV for 2HDM-I and M ± = 580 GeV for 2HDM-II.…”

Section: The Model Setupmentioning

confidence: 99%

LHC search of new Higgs boson via resonant di-Higgs production with decays into 4W

Ren

Xiao

Zhou

et al. 2018

J. High Energ. Phys.

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Searching for new Higgs particle beyond the observed light Higgs boson h 0 (125 GeV) will unambiguously point to new physics beyond the standard model. We study the resonant production of a CP-even heavy Higgs state H 0 in the di-Higgs channel, gg → H 0 → h 0 h 0 → W W * W W * , at the LHC Run-2 and the high luminosity LHC (HL-LHC). We analyze two types of the 4W decay modes, one with the same-sign di-leptons (4W → ± ν ± ν4q) and the other with tri-leptons (4W → ± ν ∓ ν ± ν2q). We perform a full simulation for the signals and backgrounds, and estimate the discovery potential of the heavy Higgs state at the LHC Run-2 and the HL-LHC, in the context of generic twoHiggs-doublet models (2HDM). We determine the viable parameter space of the 2HDM as allowed by the theoretical constraints and the current experimental limits. We systematically analyze the allowed parameter space of the 2HDM which can be effectively probed by the heavy Higgs searches of the LHC, and further compare this with the viable parameter region under the current theoretical and experimental bounds.

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Weak radiative decays of the B meson and bounds on $$M_{H^\pm }$$ M H ± in the Two-Higgs-Doublet Model

Cited by 293 publications

References 82 publications

High scale impact in alignment and decoupling in two-Higgs-doublet models

High scale impact in alignment and decoupling in two-Higgs-doublet models

Gauge-independent renormalization of the N2HDM

LHC search of new Higgs boson via resonant di-Higgs production with decays into 4W

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