scholarly journals Multiple point principle in the general Two-Higgs-Doublet model

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Markos Maniatis ◽  
Lohan Sartore ◽  
Ingo Schienbein
Keyword(s):  
Higgs Boson ◽  
Higgs Doublet ◽  
Boson Mass ◽  
Multiple Point ◽  
Higgs Boson Mass ◽  
Bilinear Formalism ◽  
Doublet Model ◽  
Two Higgs Doublet Model

Abstract Based on the Multiple Point Principle, the Higgs boson mass has been predicted to be 135 ± 9 GeV — more than two decades ago. We study the Multiple Point Principle and its prospects with respect to the Two-Higgs-Doublet model (THDM). Applying the bilinear formalism we show that concise conditions can be given with a classification of different kinds of realizations of this principle. We recover cases discussed in the literature but identify also different realizations of the Multiple Point Principle.

scholarly journals ON THE ORIGIN OF APPROXIMATE CUSTODIAL SYMMETRY IN THE TWO-HIGGS DOUBLET MODEL

2009 ◽  
Vol 24 (30) ◽  
pp. 5587-5637 ◽  
Author(s):  
C. D. FROGGATT ◽  
R. NEVZOROV ◽  
H. B. NIELSEN ◽  
D. THOMPSON
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Higgs Doublet ◽  
High Energy ◽  
Boson Mass ◽  
Multiple Point ◽  
Large Set ◽  
Enhanced Production ◽  
Doublet Model ◽  
Two Higgs Doublet Model

We argue that the consistent implementation of the multiple point principle (MPP) in the general nonsupersymmetric two-Higgs doublet model (2HDM) can lead to a set of approximate global custodial symmetries that ensure CP conservation in the Higgs sector and the absence of flavor changing neutral currents (FCNC) in the considered model. In particular, the existence of a large set of degenerate vacua at some high energy scale Λ caused by the MPP can result in approximate U(1) and Z2 symmetries that suppress FCNC and CP-violating interactions in the 2HDM. We explore the renormalization group (RG) flow of the Yukawa and Higgs couplings within the MPP inspired 2HDM with approximate custodial symmetries and show that the solutions to the RG equations are focused near quasifixed points at low energies if the MPP scale Λ is relatively high. We study the Higgs spectrum and couplings near the quasifixed point at moderate values of tan β and compute a theoretical upper bound on the lightest Higgs boson mass. If Λ ≳ 1010 GeV the lightest CP-even Higgs boson is always lighter than 125 GeV. When the MPP scale is low, the mass of the lightest Higgs particle can reach 180–220 GeV while its coupling to the top quark can be significantly larger than in the SM, resulting in the enhanced production of Higgs bosons at the LHC. Other possible scenarios that appear as a result of the implementation of the MPP in the 2HDM are also discussed.

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.

scholarly journals Higgs boson pair production at a photon–photon collision in the two Higgs doublet model

2009 ◽  
Vol 672 (4-5) ◽  
pp. 354-360 ◽  
Author(s):  
Eri Asakawa ◽  
Daisuke Harada ◽  
Shinya Kanemura ◽  
Yasuhiro Okada ◽  
Koji Tsumura
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Higgs Doublet ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Doublet Model ◽  
Two Higgs Doublet Model ◽  
Photon Collision

scholarly journals CONSTRAINTS ON THE CHARGED HIGGS BOSON OF THE TWO-HIGGS DOUBLET MODEL TYPE III

2011 ◽  
Vol 26 (25) ◽  
pp. 1869-1879 ◽  
Author(s):  
H. CARDENAS ◽  
J. DUARTE ◽  
J. ALEXIS RODRIGUEZ
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Higgs Mass ◽  
Higgs Doublet ◽  
Charged Higgs Boson ◽  
Top Quark Mass ◽  
Type Iii ◽  
Charged Higgs ◽  
Doublet Model ◽  
Two Higgs Doublet Model

The D0 experiment has reported a direct search for a charged Higgs boson produced by [Formula: see text] annihilation and decaying to [Formula: see text] final state, in the 180≤MH+≤300 GeV mass range. The analysis has led to upper limits on the production cross-section in the framework of the two-Higgs doublet model types I, II and III. We compare the predictions of two different scenarios in the framework of the two-Higgs doublet type III to the cross-section limits reported by D0 collaboration, and we obtain constraints on the charged Higgs mass, for the case when the charged Higgs mass is bigger than the top quark mass. Also, searches for the charged Higgs boson with a mass smaller than top quark mass are considered, we discuss the possible limits on the charged Higgs boson mass obtained from measurements of the ratio [Formula: see text] within the two-Higgs doublet model type III.

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