Large pseudoscalar Yukawa couplings in the complex 2HDM

Fontes, Duarte; Romão, Jorge C.; Santos, Rui; Silva, Joao

doi:10.1007/jhep06(2015)060

Cited by 44 publications

(45 citation statements)

References 100 publications

(139 reference statements)

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“…The possible combinations of Yukawa couplings of the Higgs bosons to up-type quarks, down-type quarks or charged leptons are classified as type I, type II, lepton-specific and flipped and are defined in table 1. The resulting couplings of the fermions normalised to the SM couplings can be found in [69]. In this work we focus on real 2HDMs of type I and type II.…”

Section: Jhep02(2017)121mentioning

confidence: 99%

Strong first order electroweak phase transition in the CP-conserving 2HDM revisited

Basler

Krause

Mühlleitner

et al. 2017

J. High Energ. Phys.

171

167

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The discovery of the Higgs boson by the LHC experiments ATLAS and CMS has marked a milestone for particle physics. Yet, there are still many open questions that cannot be answered within the Standard Model (SM). For example, the generation of the observed matter-antimatter asymmetry in the universe through baryogenesis can only be explained qualitatively in the SM. A simple extension of the SM compatible with the current theoretical and experimental constraints is given by the 2-Higgs-Doublet Model (2HDM) where a second Higgs doublet is added to the Higgs sector. We investigate the possibility of a strong first order electroweak phase transition in the CP-conserving 2HDM type I and type II where either of the CP-even Higgs bosons is identified with the SM-like Higgs boson. The renormalisation that we apply on the loop-corrected Higgs potential allows us to efficiently scan the 2HDM parameter space and simultaneously take into account all relevant theoretical and up-to-date experimental constraints. The 2HDM parameter regions found to be compatible with the applied constraints and a strong electroweak phase transition are analysed systematically. Our results show that there is a strong interplay between the requirement of a strong phase transition and collider phenomenology with testable implications for searches at the LHC.

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Section: Jhep02(2017)121mentioning

confidence: 99%

Strong first order electroweak phase transition in the CP-conserving 2HDM revisited

Basler

Krause

Mühlleitner

et al. 2017

J. High Energ. Phys.

171

167

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show abstract

“…Our study is primarily motivated by the need to learn as much as possible in a model-independent way about the recently discovered Higgs, including its CP properties (for recent discussions of CP violation in the Higgs sector in the context of the Two-Higgs Doublet Model see refs. [24][25][26][27][28]). Moreover, CPV in the Higgs sector might have implications for weak scale baryogenesis in a number of scenarios beyond the SM (BSM).…”

Section: Jhep02(2016)011 1 Introductionmentioning

confidence: 99%

Direct and indirect constraints on CP-violating Higgs-quark and Higgs-gluon interactions

Chien

Cirigliano

Dekens

et al. 2016

J. High Energ. Phys.

117

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Abstract:We investigate direct and indirect constraints on the complete set of anomalous CP-violating Higgs couplings to quarks and gluons originating from dimension-6 operators, by studying their signatures at the LHC and in electric dipole moments (EDMs). We show that existing uncertainties in hadronic and nuclear matrix elements have a significant impact on the interpretation of EDM experiments, and we quantify the improvements needed to fully exploit the power of EDM searches. Currently, the best bounds on the anomalous CP-violating Higgs interactions come from a combination of EDM measurements and the data from LHC Run 1. We argue that Higgs production cross section and branching ratios measurements at the LHC Run 2 will not improve the constraints significantly. On the other hand, the bounds on the couplings scale roughly linearly with EDM limits, so that future theoretical and experimental EDM developments can have a major impact in pinning down interactions of the Higgs.

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“…The key point we want to make is that only the doublet (T, B) model can offer non-zero (unsuppressed) CP violation for the Higgs boson, through the Yukawa coupling to third generation quarks 3 . To see this, we write the Yukawa sector of this model,…”

Section: Cp Violation From Vectorlike Quarksmentioning

confidence: 99%

“…2 We find that introducing any number of singlet T L,R and/or B L,R fields does not give rise to new CP violating phases since any potential new phases can always be rotated away by a field redefinition. 3 We assume only one representation of VLQs is present. …”

Section: Cp Violation From Vectorlike Quarksmentioning

confidence: 99%

“…One of the most straightforward ways is to extend the scalar sector of the SM, and the simplest case is the complex version of the 2 Higgs doublet model (C2HDM) [1][2][3][4][5][6]. The presence of CP violation leads to observable changes in Higgs production and decay rates, as well as contributions to low energy observables such as electric dipole moments [7].…”

Section: Introductionmentioning

confidence: 99%

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HiggsCPviolation from vectorlike quarks

2015

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We explore CP violating aspects in the Higgs sector of models where new vectorlike quarks carry Yukawa couplings mainly to the third generation quarks of the Standard Model. We point out that in the simplest model, Higgs CP violating interactions only exist in the hW W channel. At low energy, we find that rare B decays can place similarly strong constraints as those from electric dipole moments on the source of CP violation. These observations offer a new handle to discriminate from other Higgs CP violating scenarios such as scalar sector extensions of the Standard Model, and imply an interesting future interplay among limits from different experiments.

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Large pseudoscalar Yukawa couplings in the complex 2HDM

Cited by 44 publications

References 100 publications

Strong first order electroweak phase transition in the CP-conserving 2HDM revisited

Strong first order electroweak phase transition in the CP-conserving 2HDM revisited

Direct and indirect constraints on CP-violating Higgs-quark and Higgs-gluon interactions

HiggsCPviolation from vectorlike quarks

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