scholarly journals Two-Higgs-doublet-portal dark-matter models in light of direct search and LHC data

2017 ◽  
Vol 2017 (4) ◽  
Author(s):  
Chia-Feng Chang ◽  
Xiao-Gang He ◽  
Jusak Tandean
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Direct Search

scholarly journals SCALAR DARK MATTER EFFECTS IN HIGGS AND TOP QUARK DECAYS

2007 ◽  
Vol 22 (25n28) ◽  
pp. 2121-2129 ◽  
Author(s):  
XIAO-GANG HE ◽  
HO-CHIN TSAI ◽  
TONG LI ◽  
XUE-QIAN LI
Keyword(s):  
Dark Matter ◽  
Top Quark ◽  
Neutral Current ◽  
Higgs Doublet ◽  
Tree Level ◽  
Flavor Changing ◽  
Higgs Decay ◽  
Dark Matter Relic Density ◽  
Flavor Changing Neutral Current ◽  
Two Higgs Doublet Model

We study possible observational effects of scalar dark matter, the darkon D, in Higgs h and top quark t decay processes, h → DD and t → cDD in the minimal Standard Model (SM) and its two Higgs doublet model (THDM) extension supplemented with a SM singlet darkon scalar field D. We find that the darkon D can have a mass in the range of sub-GeV to several tens of GeV, interesting for LHC and ILC colliders, to produce the required dark matter relic density. In the SM with a darkon, t → cDD only occurs at loop level giving a very small rate, while the rate for Higgs decay h → DD can be large. In THDM III with a darkon, where tree level flavor changing neutral current (FCNC) interaction exists, a sizable rate for t → cDD is also possible.

scholarly journals Direct search of dark matter in high-scale supersymmetry

2013 ◽  
Vol 87 (3) ◽  
Author(s):  
Junji Hisano ◽  
Koji Ishiwata ◽  
Natsumi Nagata
Keyword(s):  
Dark Matter ◽  
Direct Search ◽  
High Scale

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 Indirect and direct search for dark matter

2015 ◽  
Vol 85 ◽  
pp. 1-32 ◽  
Author(s):  
M. Klasen ◽  
M. Pohl ◽  
G. Sigl
Keyword(s):  
Dark Matter ◽  
Direct Search

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.

scholarly journals Pseudo-Nambu-Goldstone dark matter and two-Higgs-doublet models

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Xue-Min Jiang ◽  
Chengfeng Cai ◽  
Zhao-Huan Yu ◽  
Yu-Pan Zeng ◽  
Hong-Hao Zhang
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Two Higgs Doublet Models

scholarly journals On a further search for a yearly modulation of the rate in particle Dark Matter direct search

1999 ◽  
Vol 450 (4) ◽  
pp. 448-455 ◽  
Author(s):  
R. Bernabei ◽  
P. Belli ◽  
F. Montecchia ◽  
W. Di Nicolantonio ◽  
G. Ignesti ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Search ◽  
Particle Dark Matter
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