scholarly journals Dark matter, neutrino masses, and high scale validity of an inert Higgs doublet model

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
Nabarun Chakrabarty ◽  
Dilip Kumar Ghosh ◽  
Biswarup Mukhopadhyaya ◽  
Ipsita Saha
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Neutrino Masses ◽  
High Scale ◽  
Scale Validity ◽  
Doublet Model

scholarly journals PATHWAYS TO TESTABLE LEPTOGENESIS

2010 ◽  
Vol 25 (07) ◽  
pp. 501-509 ◽  
Author(s):  
PEI-HONG GU ◽  
UTPAL SARKAR
Keyword(s):  
Higgs Doublet ◽  
Neutrino Masses ◽  
High Scale ◽  
Cp Asymmetry ◽  
Decay Products ◽  
Doublet Model ◽  
Mass Degeneracy ◽  
Three Body ◽  
Two Higgs Doublet Model ◽  
Very High

In the conventional seesaw models of neutrino masses, leptogenesis occurs at a very high scale. Three approaches have been discussed in the literature to lower the scale of leptogenesis making them testable: mass degeneracy, hierarchy of couplings and three-body decays. We advocate yet another approach to a testable leptogenesis, whereby the decaying particles could go out of equilibrium at an accessible scale due to kinematics, although their couplings to the decay products are larger for generating a desired CP asymmetry. We demonstrate this new possibility for the testable leptogenesis in a two-Higgs doublet model where the neutrino masses originate from a one-loop diagram.

scholarly journals A two Higgs doublet model for dark matter and neutrino masses

2019 ◽  
Vol 795 ◽  
pp. 319-326 ◽  
Author(s):  
Daniel A. Camargo ◽  
Miguel D. Campos ◽  
Téssio B. de Melo ◽  
Farinaldo S. Queiroz
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Neutrino Masses ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Two component dark matter with inert Higgs doublet: neutrino mass, high scale validity and collider searches

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Subhaditya Bhattacharya ◽  
Purusottam Ghosh ◽  
Abhijit Kumar Saha ◽  
Arunansu Sil
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Higgs Doublet ◽  
High Scale ◽  
Scale Validity ◽  
Two Component

scholarly journals Light scalar dark matter extension of the type-II two-Higgs-doublet model

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
Lei Wang ◽  
Rongle Shi ◽  
Xiao-Fang Han ◽  
Bin Zhu
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Type Ii ◽  
Light Scalar ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Constraining the Inert Doublet Model using Vector Boson Fusion

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Daniel Dercks ◽  
Tania Robens
Keyword(s):  
Dark Matter ◽  
Parameter Space ◽  
Vector Boson ◽  
Higgs Doublet ◽  
Dark Matter Candidate ◽  
Final States ◽  
Vector Boson Fusion ◽  
Doublet Model ◽  
Inert Doublet Model ◽  
Two Higgs Doublet Model

AbstractIn this work, we use a recast of the Run II search for invisible Higgs decays within Vector Boson Fusion to constrain the parameter space of the Inert Doublet model, a two Higgs doublet model with a dark matter candidate. When including all known theoretical as well as collider constraints, we find that the above can rule out a relatively large part in the $$m_H,\,\lambda _{345}$$mH,λ345 parameter space, for dark scalar masses $$m_H\,\le \,100\,{\mathrm{GeV}}$$mH≤100GeV. Including the latest dark matter constraints, a smaller part of parameter space remains which is solely excluded from the above analysis. We also discuss the sensitivity of monojet searches and multilepton final states from Run II.

scholarly journals The dark phases of the N2HDM

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Isabell Engeln ◽  
Pedro Ferreira ◽  
M. Margarete Mühlleitner ◽  
Rui Santos ◽  
Jonas Wittbrodt
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
Higgs Doublet ◽  
Tree Level ◽  
Vacuum Structure ◽  
The Standard Model ◽  
Doublet Model ◽  
Specific Phase

Abstract We discuss the dark phases of the Next-to-2-Higgs Doublet model. The model is an extension of the Standard Model with an extra doublet and an extra singlet that has four distinct CP-conserving phases, three of which provide dark matter candidates. We discuss in detail the vacuum structure of the different phases and the issue of stability at tree-level of each phase. Taking into account the most relevant experimental and theoretical constraints, we found that there are combinations of measurements at the Large Hadron Collider that could single out a specific phase. The measurement of h125 → γγ together with the discovery of a new scalar with specific rates to τ+τ− or γγ could exclude some phases and point to a specific phase.

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