Aligned CP-violating Higgs sector canceling the electric dipole moment

With the hypothesis of minimal flavor violation, we find that there exists a power-aligned relation between the Yukawa couplings of the two scalar doublets in the two-Higgs-doublet model with Hermitian Yukawa matrices. Within such a power-aligned framework, it is found that a simultaneous explanation of the anomalies observed in the electron and muon anomalous magnetic moments can be reached with TeV-scale quasi-degenerate Higgs masses, and the resulting parameter space is also phenomenologically safer under the B-physics, Z and τ decay data, as well as the current LHC bounds. Furthermore, the flavor-universal power that enhances the charged-lepton Yukawa couplings prompts an interesting correlation between the two anomalies, which makes the model distinguishable from the (generalized) linearly aligned and the lepton-specific two-Higgs-doublet models that address the same anomalies but in a non-correlative manner, and hence testable by future precise measurements.

Section: Jhep01(2021)034mentioning

confidence: 99%

Power-aligned 2HDM: a correlative perspective on (g − 2)e,μ

et al. 2021

“…EDM [35], and the radium EDM [36]. The EDM measurements are usually interpreted to constrain CPV mixings in the context of the 2HDM [37][38][39][40][41][42][43][44][45], or the SUSY-breaking scale [46]. Usually, the constraint on CP-violating 2HDM from EDM was performed in the absence of spontaneous CP-violating phase to avoid the problematic SCPV domain walls [38].…”

Section: Jhep10(2020)081mentioning

confidence: 99%

Collapsing domain walls in the two-Higgs-doublet model and deep insights from the EDM

Chen

Teng

et al. 2020

We study the domain wall solutions in the general two-Higgs-doublet model (2HDM) with a CP-violating phase. The 2HDM with the spontaneouse CP violation is found to have domain wall solutions whose tensions are $$ \mathcal{O} $$ O (106) GeV3, which are excluded by the Zel’dovich-Kobzarev-Okun bound. With the explicit CP-violating (CPV) terms as the so-called biased term in the scalar potential, domain walls can collapse in the early Universe. The sizes of the explicit CP violation can be constrained from the Big Bang nucleosynthesis. This constraint is converted to the CPV mixing of αc, and is mostly sensitive to the mass splittings between two heavy neutral Higgs bosons. We estimate the possible gravitational wave signals and the electric dipole moment (EDM) predictions due to the domain wall collapsing. It turns out that the peak spectrum of the GW from the domain wall collapsing cannot be probed in any future program. In contrast, the untenable regions with very tiny explicit CPV parameter in the Higgs potential has been partially excluded by the latest electron EDM measurements at the ACME-II and will be further confirmed or excluded by the future ACME-III projection.

“…Therefore, we neglect this contribution, and we simply consider the bound on the electron EDM as |d e | < 1.1 × 10 −29 e cm (90% CL) in the following discussion. In our previous paper [63], we confirmed that the neutron EDM d n does not give stringent constraints, so that we focus on the constraint from d e in the following discussion.…”

Section: Constraint From the Electric Dipole Moment Datamentioning

confidence: 60%

“…The relation between the parameters of the Higgs potential in the different bases can be found in ref. [63]. The stationary conditions for the Higgs potential…”

Section: Jhep04(2021)144mentioning

confidence: 99%

See 1 more Smart Citation

Testing aligned CP-violating Higgs sector at future lepton colliders

Kanemura

Kubota

Yagyu

2021

Self Cite

We discuss the testability of CP-violating phases at future lepton colliders for the scenario which satisfies electric dipole moment data by destructive interferences among several phases. We consider the general but aligned two Higgs doublet model which has the CP-violating phases in the Higgs potential and the Yukawa interaction. The Yukawa interaction terms are aligned to avoid flavor changing neutral currents at tree level. The Higgs potential is also aligned such that the coupling constants of the lightest Higgs boson with the mass of 125 GeV to the Standard Model (SM) particles are the same as those of the SM at tree level. We investigate the azimuthal angle distribution of the hadronic decay of tau leptons arising from production and decay of the extra Higgs bosons, which contains information of the CP-violating phases. From the signal and background simulation, we find that the scenario with finite CP-violating phases can be distinguished from CP conserving one at future lepton colliders like the International Linear Collider.