Gauge-independent renormalization of the N2HDM

Krause, Marcel; López-Val, David; Mühlleitner, Margarete; Santos, Rui

doi:10.1007/jhep12(2017)077

Cited by 36 publications

(68 citation statements)

References 118 publications

(237 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The SM electroweak corrections, on the other hand, cannot be easily adapted to models with extended scalar sectors and are not taken into account. They have been recently provided in [20]. The currently implemented higher-order corrections are…”

Section: Higgs Decays In N2hdecaymentioning

confidence: 99%

N2HDECAY: Higgs boson decays in the different phases of the N2HDM

Engeln

Mühlleitner

Wittbrodt

2019

Computer Physics Communications

Self Cite

View full text Add to dashboard Cite

The program N2HDECAY calculates the branching ratios and decay widths of the Higgs bosons of the Next-to-Two-Higgs-Doublet Model (N2HDM). The code incorporates the dominant higher-order effects by including QCD corrections and off-shell decay modes. The N2HDM is an extension of the Standard Model by a Higgs doublet and a real Higgs singlet. Its phenomenology can change dramatically depending on which global symmetries are broken by electroweak symmetry breaking. It can feature a large visible Higgs sector in the broken phase, behave like a 2HDM with scalar singlet dark matter in the dark singlet phase, or, in the inert doublet phase, extend an inert doublet model by mixing a singlet with the SM Higgs boson. N2HDECAY provides precise predictions for the decays of the Higgs bosons in all of these phases.Program Title: N2HDECAY Licensing provisions: MIT Programming language: Fortran A code to calculate the branching ratios and total widths of the Higgs bosons in the N2HDM including state-of-the-art QCD and off-shell corrections. The code is available at https://gitlab.com/jonaswittbrodt/N2HDECAY .

show abstract

Section: Higgs Decays In N2hdecaymentioning

confidence: 99%

N2HDECAY: Higgs boson decays in the different phases of the N2HDM

Engeln

Mühlleitner

Wittbrodt

2019

Computer Physics Communications

Self Cite

View full text Add to dashboard Cite

show abstract

“…So far, the construction is similar to the β t scheme of [28], "scheme 3" in [13] or [27] of the SM, but without the proper relation of the VEV to the mass terms, it is not yet complete. To complete it as in [13,27,28], one identifies the bare mass parameters arising from the proper VEV, rather than v 0 , as also noted in [13,[27][28][29][30][31]. The idea is to avoid the inclusion of the gauge dependence coming from δ v into the definition of the mass counterterm δ m as will be shown in the next sections.…”

Section: Scalar Sector and Tadpole Conditionsmentioning

confidence: 99%

Gauge dependence of tadpole and mass renormalization for a seesaw extended 2HDM

Dūdėnas

Gajdosik

2018

Phys. Rev. D

View full text Add to dashboard Cite

We study the gauge dependence of the neutrino mass renormalization in a two Higgs doublet model, that is extended with one singlet seesaw neutrino. This model gives only one light neutrino a mass at tree level, while the second light mass is generated at loop level via the interaction with the second Higgs doublet. At one loop level, one neutrino stays massless. We use multiplicative renormalization constants to define counterterms. The renormalized mass parameters are defined as the complex poles of the propagators, using the complex mass scheme for mass renormalization. With this setup, we analytically get the expressions for the neutrino mass counterterms and isolate the gauge dependent part. We show, how relating this gauge dependent part with the tadpole renormalization leads to gauge independent counterterm definitions, hence gauge independent bare masses for neutrinos.

show abstract

“…The tree-level perturbative unitarity is obtained by requiring that all absolute eigenvalues of the two-body scalar scattering matrix are less than 8π. The constraints are given by [83][84][85] |λ 3 − λ 4 | < 8π , (A4)…”

Section: (A3)mentioning

confidence: 99%

Hidden Higgs portal vector dark matter for the Galactic center gamma-ray excess from the two-step cascade annihilation, and muon g − 2

Yang

2018

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:We have built a lepton-specific next-to-minimal two-Higgs-doublet-portal vector dark matter model. The vector dark matter in the hidden sector does not directly couple to the visible sector, but instead annihilates into the hidden Higgs bosons which decay through a small coupling into the CP-odd Higgs bosons. In this model, the Galactic center gamma-ray excess is mainly due to the 2-step cascade annihilation with τ 's in the final state. The obtained mass of the CP-odd Higgs A in the Galactic center excess fit can explain the muon g − 2 anomaly at the 2σ level without violating the stringent constraints from the lepton universality and τ decays. We show three different freeze-out types of the dark matter relic, called (i) the conventional WIMP dark matter, (ii) the unconventional WIMP dark matter and (iii) the cannibally co-decaying dark matter, depending on the magnitudes of the mixing angles between the hidden Higgs and visible two-Higgs doublets. The dark matter in the hidden sector is secluded from detections in the direct searches or colliders, while the dark matter annihilation signals are not suppressed in a general hidden sector dark matter model. We discuss the constraints from observations of the dwarf spheroidal galaxies and the Fermi-LAT projected sensitivity.

show abstract

Gauge-independent renormalization of the N2HDM

Cited by 36 publications

References 118 publications

N2HDECAY: Higgs boson decays in the different phases of the N2HDM

N2HDECAY: Higgs boson decays in the different phases of the N2HDM

Gauge dependence of tadpole and mass renormalization for a seesaw extended 2HDM

Hidden Higgs portal vector dark matter for the Galactic center gamma-ray excess from the two-step cascade annihilation, and muon g − 2

Contact Info

Product

Resources

About