Two Higgs bidoublet model with spontaneous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>and<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 and decoupling limit to the two Higgs doublet model

Liu, Jinyan; Wang, Liming; Wu, Yonggang; Zhou, Yu‐Feng

doi:10.1103/physrevd.86.015007

Cited by 6 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a wide class of DM models, the DM particle χ can annihilate into the standard model (SM) particles through an s-channel resonance particle R. Such as the singlet scalar DM models [17][18][19][20][21][22][23][24][25][26] , the left-right symmetric models with extended stable scalar sectors [27][28][29][30][31][32][33][34] and the fermionic DM models [35][36][37][38][39][40][41]. The presence of the scalar R can also play an important role in electroweak phase transion [24,39,[42][43][44][45][46][47][48][49][50] and modify the interpretation of the DM-nuclei scattering [51,52].…”

Section: Introductionmentioning

confidence: 99%

Direct Detection of Dark Matter with Resonant Annihilation*

Zhou

2015

Commun. Theor. Phys.

Self Cite

View full text Add to dashboard Cite

In the scenario where the dark matter (DM) particles χχ pair annihilate through a resonance particle R, the constraint from DM relic density makes the corresponding cross section for DM-nuclei elastic scattering extremely small, and can be below the neutrino background induced by the coherent neutrino-nuclei scattering, which makes the DM particle beyond the reach of the conventional DM direct detection experiments. We present an improved analytical calculation of the DM relic density in the case of resonant DM annihilation for s-and p-wave cases and invesitgate the condition for the DM-nuclei scattering cross section to be above the neutrino background. We show that in Higgs-portal type models, for DM particles with s-wave annihilation, the spin-independent DM-nucleus scattering cross section is proportional to Γ R /m R , the ratio of the decay width and the mass of R. For a typical DM particle mass ∼ 50 GeV, the condition leads to Γ R /m R O(10 −4 ). In p-wave annihilation case, the spin-independent scattering cross section is insensitive to Γ R /m R , and is always above the neutrino background, as long as the DM particle is lighter than the top quark. The real singlet DM model is discussed as a concrete example. *

show abstract

Section: Introductionmentioning

confidence: 99%

Direct Detection of Dark Matter with Resonant Annihilation*

Zhou

2015

Commun. Theor. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Z 2 symmetry may be a residual symmetry from a global or local U (1). In the extension of the left-right symmetric models with a gauge singlet scalar, the Z 2 symmetry may originate from the parity and CP symmetries [27][28][29][30][31]. However, if EWPhT is also required, it was shown that the singlet scalar could contribute only up to 3% of the DM energy density [32,33].…”

Section: Introductionmentioning

confidence: 99%

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

Zhou

2014

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract:We investigate an extension of the standard model (SM) with a singlet fermionic dark matter (DM) particle which interacts with the SM sector through a real singlet scalar. The presence of a new scalar provides the possibility of generating a strongly first order phase transition needed for electroweak baryogenesis. Taking into account the latest Higgs search results at the LHC and the upper limits from the DM direct detection experiments especially that from the LUX experiment, and combining the constraints from the LEP experiment and the electroweak precision test, we explore the parameter space of this model which can lead to the strongly first order phase transition. Both the tree-and loop-level barriers are included in the calculations. We find that the allowed mass of the second Higgs particle is in the range ∼ 30-350 GeV. The allowed mixing angle α between the SM-like Higgs particle and the second Higgs particle is constrained to α 28 • . The DM particle mass is predicted to be in the range ∼15-350 GeV. The future XENON1T experiment can rule out a significant proportion of the parameter space of this model. The constraint can be relaxed only when the mass of the SM-like Higgs particle is degenerate with that of the second Higgs particle, or the mixing angle is small enough.

show abstract

LHC accessible second Higgs boson in the left-right model

Mohapatra

2014

Phys. Rev. D

View full text Add to dashboard Cite

A second Higgs doublet arises naturally as a parity partner of the standard model (SM) Higgs, once SM is extended to its left-right symmetric version (LRSM) to understand the origin of parity violation in weak interactions as well as to accommodate small neutrino masses via the seesaw mechanism. The flavor changing neutral Higgs (FCNH) effects in the minimal version of this model (LRSM), however, push the second Higgs mass to more than 15 TeV making it inaccessible at the LHC. Furthermore since the second Higgs mass is directly linked to the W R mass, discovery of a "low" mass W R (M W R ≤ 5 − 6 TeV) at the LHC would require values for some Higgs self couplings larger than one. In this paper we present an extension of LRSM by adding a vector-like SU (2) R quark doublet which weakens the FCNH constraints allowing the second Higgs mass to be near or below TeV and a third neutral Higgs below 3 TeV for a W R mass below 5 TeV. It is then possible to search for these heavier Higgs bosons at the LHC, without conflicting with FCNH constraints. A right handed W R mass in the few TeV range is quite natural in this class of models without having to resort to large scalar coupling parameters. The CKM mixings are intimately linked to the vector-like quark mixings with the known quarks, which is the main reason why the constraints on the second Higgs mass is relaxed. We present a detailed theoretical and phenomenological analysis of this extended LR model and point out some tests as well as its potential for discovery of a second Higgs at the LHC. Two additional features of the model are: (i) a 5/3 charged quark and (ii) a fermionic top partner with masses in the TeV range.

show abstract

Two Higgs bidoublet model with spontaneousPandCPviolation and decoupling limit to the two Higgs doublet model

Cited by 6 publications

References 33 publications

Direct Detection of Dark Matter with Resonant Annihilation*

Direct Detection of Dark Matter with Resonant Annihilation*

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

LHC accessible second Higgs boson in the left-right model

Contact Info

Product

Resources

About