scholarly journals Form factor effects in a Higgs portal pionic dark matter model

2016 ◽  
Author(s):  
Shohei Okawa
Keyword(s):  
Dark Matter ◽  
Form Factor ◽  
Matter Model ◽  
Higgs Portal ◽  
Dark Matter Model

scholarly journals Gauge-Singlet Vector-Like Fermion Dark Matter, LHC Diphoton Rate, and Direct Detection

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Shrihari Gopalakrishna ◽  
Tuhin Subhra Mukherjee
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Gluon Fusion ◽  
Gauge Bosons ◽  
Hidden Sector ◽  
Dark Matter Relic Density ◽  
Higgs Search ◽  
Matter Model ◽  
Higgs Portal ◽  
Dark Matter Model

We study a gauge-singlet vector-like fermion hidden sector dark matter model, in which the communication between the dark matter and the visible standard model sector is via the Higgs-portal scalar-Higgs mixing and also via a hidden sector scalar with loop-level couplings to two gluons and also to two hypercharge gauge bosons induced by a vector-like quark. We find that the Higgs-portal possibility is stringently constrained to be small by the recent LHC di-Higgs search limits, and the loop induced couplings are important to include. In the model parameter space, we present the dark matter relic density, the dark-matter-nucleon direct detection scattering cross section, the LHC diphoton rate from gluon-gluon fusion, and the theoretical upper bounds on the fermion-scalar couplings from perturbative unitarity.

scholarly journals Vector dark matter from split SU(2) gauge bosons

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Zexi Hu ◽  
Chengfeng Cai ◽  
Yi-Lei Tang ◽  
Zhao-Huan Yu ◽  
Hong-Hao Zhang
Keyword(s):  
Dark Matter ◽  
Gauge Group ◽  
Measurement Data ◽  
Indirect Detection ◽  
Gauge Bosons ◽  
Dark Matter Relic Density ◽  
Matter Model ◽  
Direct And Indirect Detection ◽  
Numerous Parameter ◽  
Dark Matter Model

Abstract We propose a vector dark matter model with an exotic dark SU(2) gauge group. Two Higgs triplets are introduced to spontaneously break the symmetry. All of the dark gauge bosons become massive, and the lightest one is a viable vector DM candidate. Its stability is guaranteed by a remaining Z2 symmetry. We study the parameter space constrained by the Higgs measurement data, the dark matter relic density, and direct and indirect detection experiments. We find numerous parameter points satisfying all the constraints, and they could be further tested in future experiments. Similar methodology can be used to construct vector dark matter models from an arbitrary SO(N) gauge group.

scholarly journals Cosmological Simulation for Fuzzy Dark Matter Model

2019 ◽  
Vol 5 ◽  
Author(s):  
Jiajun Zhang ◽  
Hantao Liu ◽  
Ming-Chung Chu
Keyword(s):  
Dark Matter ◽  
Matter Model ◽  
Dark Matter Model

scholarly journals How heavy can dark matter be? Constraining colourful unitarity with SARAH

2021 ◽  
Vol 81 (9) ◽  
Author(s):  
Mark D. Goodsell ◽  
Rhea Moutafis
Keyword(s):  
Dark Matter ◽  
Vacuum Stability ◽  
Dark Matter Mass ◽  
Matter Model ◽  
Dark Matter Model

AbstractWe describe the automation of the calculation of perturbative unitarity constraints including scalars that have colour charges, and its release in . We apply this, along with vacuum stability constraints, to a simple dark matter model with colourful mediators and interesting decays, and show how it leads to a bound on a thermal relic dark matter mass well below the classic Griest-Kamionkowski limit.

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