Double Higgs production in the Two Higgs Doublet Model at the linear collider

2008 ◽  
Author(s):  
Abdesslam Arhrib ◽  
Rachid Benbrik ◽  
Cheng-Wei Chiang ◽  
John Ellis ◽  
Salah Nasri ◽  
...  
Keyword(s):  
Linear Collider ◽  
Higgs Doublet ◽  
Higgs Production ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Double neutral Higgs production in the two-Higgs doublet model at the LHC

2009 ◽  
Vol 2009 (08) ◽  
pp. 035-035 ◽  
Author(s):  
Abdesslam Arhrib ◽  
Rachid Benbrik ◽  
Chuan-Hung Chen ◽  
Renato Guedes ◽  
and Rui Santos
Keyword(s):  
Higgs Doublet ◽  
Higgs Production ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Echoes of 2HDM inflation at the collider experiments

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
Tanmoy Modak ◽  
Kin-ya Oda
Keyword(s):  
Large Hadron Collider ◽  
Linear Collider ◽  
Hadron Collider ◽  
International Linear Collider ◽  
Higgs Doublet ◽  
Lepton Colliders ◽  
The Future ◽  
Doublet Model ◽  
Near Degeneracy ◽  
Two Higgs Doublet Model

AbstractWe study the correlation between the constraints on general two Higgs doublet model from Higgs inflation and from collider experiments. The parameter space receives meaningful constraints from direct searches at the large hadron collider and from flavor physics if $$m_H$$ m H , $$m_A$$ m A , and $$m_{H^\pm }$$ m H ± are in the sub-TeV range, where H, A, and $$H^\pm $$ H ± are the CP even, CP odd, and charged Higgs bosons, respectively. We find that in the parameter region favored by the Higgs inflation, H, A, and $$H^\pm $$ H ± are nearly degenerate in mass. We show that such near degeneracy can be probed directly in the upcoming runs of the Large Hadron Collider, while the future lepton colliders such as the International Linear Collider and the future circular collider would provide complementary probes.

scholarly journals The $$R^2$$-Higgs inflation with two Higgs doublets

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
Sung Mook Lee ◽  
Tanmoy Modak ◽  
Kin-ya Oda ◽  
Tomo Takahashi
Keyword(s):  
Parameter Space ◽  
Linear Collider ◽  
Hadron Collider ◽  
International Linear Collider ◽  
Higgs Sector ◽  
Scalar Fields ◽  
Mass Range ◽  
Higgs Doublet ◽  
Doublet Model ◽  
Two Higgs Doublet Model

AbstractWe study $$R^2$$ R 2 -Higgs inflation in a model with two Higgs doublets in which the Higgs sector of the Standard Model is extended by an additional Higgs doublet, thereby four scalar fields are involved in the inflationary evolutions. We first derive the set of equations required to follow the inflationary dynamics in this two Higgs doublet model, allowing a nonminimal coupling between the Higgs-squared and the Ricci scalar R, as well as the $$R^2$$ R 2 term in the covariant formalism. By numerically solving the system of equations, we find that, in parameter space where a successful $$R^2$$ R 2 -Higgs inflation are realized and consistent with low energy constraints, the inflationary dynamics can be effectively described by a single slow-roll formalism even though four fields are involved in the model. We also argue that the parameter space favored by $$R^2$$ R 2 -Higgs inflation requires nearly degenerate masses for $$m_{\mathsf {H}}$$ m H , $$m_A$$ m A and $$m_{{\mathsf {H}}^{\pm }}$$ m H ± , where $${\mathsf {H}}$$ H , A, and $${\mathsf {H}}^{\pm }$$ H ± are the extra CP even, CP odd, and charged Higgs bosons in the general two Higgs doublet model taking renormalization group evolutions of the parameters into account. Discovery of such heavy scalars at the Large Hadron Collider (LHC) are possible if they are in the sub-TeV mass range. Indirect evidences may also emerge at the LHCb and Belle-II experiments, however, to probe the quasi degenerate mass spectra one would likely require high luminosity LHC or future lepton colliders such as the International Linear Collider and the Future Circular Collider.

scholarly journals ELECTROWEAK–HIGGS UNIFICATION AND THE HIGGS BOSON MASS

2007 ◽  
Vol 22 (07) ◽  
pp. 1417-1440 ◽  
Author(s):  
A. ARANDA ◽  
J. L. DÍAZ-CRUZ ◽  
A. ROSADO
Keyword(s):  
Higgs Boson ◽  
Linear Collider ◽  
Higgs Doublet ◽  
Boson Mass ◽  
Gauge Fields ◽  
Higgs Boson Mass ◽  
Normalization Constant ◽  
Doublet Model ◽  
Two Higgs Doublet Model ◽  
Future Linear Collider

We propose an alternative unification scenario where the Higgs self-coupling (λ) is determined by imposing its unification with the electroweak gauge couplings. An attractive feature of models within this scenario is the possibility to determine the Higgs boson mass by evolving λ from the electroweak–Higgs unification scale M GH down to the electroweak scale. The unification condition for the gauge (g1, g2) and Higgs couplings is written as g1 = g2 = f(λ), where [Formula: see text] being the normalization constant. Two variants for the unification condition are discussed; scenario I is defined through the linear relation: g1 = g2 = kHλ(M GH ), while scenario II assumes a quadratic relation: [Formula: see text]. Fixing kH = O(1) and the standard normalization (kY = 5/3), we obtain a Higgs boson mass value mH ≃ 190 GeV , with similar results for other normalizations such as kY = 7/4 and 3/2. However, the unification scale M GH depends on the value of kY, going from 1.8 ×1012 GeV up to 4.9 ×1014 GeV for 7/4 > kY > 3/2. Possible tests of this idea at a future linear collider and its application for determining the Higgs spectrum in the two-Higgs doublet model are also discussed. We also elaborate on these unification scenarios within the context of a six-dimensional SU (3)c× SU (3)w Gauge–Higgs unified model, where the Higgs boson arises as the extra-dimensional components of the 6D gauge fields.

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