Neutral Higgs production on LHC in the two-Higgs-doublet model with spontaneous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>violation

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.

show abstract

“…The domain wall solutions in the 2HDM were previously studied in refs. [8][9][10], and recently revisited in refs. [11,12].…”

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

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…For 2HDMs shaped by an exact Z 2 symmetry (not softly broken), this precludes a spontaneous origin of CP violation: having NFC and spontaneous CP violation (SCPV) requires more than two doublets [6,7]. 2HDMs with spontaneous CP violation have been widely studied in the literature [8][9][10][11][12][13][14][15][16][17][18][19][20]. Recently, a 2HDM where all CP violation is originated by the vacuum, which includes SFCNC of controlled intensity, and which is viable, was presented in [21].…”

Section: Introductionmentioning

confidence: 99%

Bounded masses in Two Higgs Doublets Models, Spontaneous CP Violation and $\mathbb{Z}_2$ symmetry

Nebot

2019

Preprint

View full text Add to dashboard Cite

In Two Higgs Doublet Models shaped by some unbroken symmetry, placing perturbativity requirements on the quartic couplings can imply that the allowed masses of all the fundamental scalars are bounded from above, i.e. there is no decoupling regime for the new scalars. This important property is analysed in detail for the only two viable scenarios, the case with Z 2 symmetry and the case with CP symmetry. It is also noticeable that one exception arises in each case: when the vacuum is assumed to respect the imposed symmetry, a decoupling regime can nevertheless appear without violating perturbativity requirements. In both models with no decoupling regime, soft symmetry breaking terms can however lead to such a decoupling regime: the possibility that this regime might be unnatural, since it requires some fine tuning, is also analysed.

show abstract

“…The domain wall solutions in the 2HDM were previously studied in Refs. [9][10][11], and recently revisited in Refs. [12,13].…”

Section: Introductionmentioning

confidence: 99%

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

Chen,

Li,

Teng

et al. 2020

Preprint

View full text Add to dashboard Cite

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 O(10 6 ) GeV 3 , 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 α c , 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.

show abstract

Neutral Higgs production on LHC in the two-Higgs-doublet model with spontaneousCPviolation

Cited by 8 publications

References 60 publications

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

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

Bounded masses in Two Higgs Doublets Models, Spontaneous CP Violation and $\mathbb{Z}_2$ symmetry

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

Contact Info

Product

Resources

About