scholarly journals Invisible Higgs decay width versus dark matter direct detection cross section in Higgs portal dark matter models

2014 ◽  
Vol 90 (5) ◽  
Author(s):  
Seungwon Baek ◽  
P. Ko ◽  
Wan-Il Park
Keyword(s):  
Dark Matter ◽  
Decay Width ◽  
Cross Section ◽  
Direct Detection ◽  
Higgs Decay ◽  
Higgs Portal

scholarly journals Direct signals from electroweak singlets through the Higgs portal

2018 ◽  
Vol 27 (16) ◽  
pp. 1830008 ◽  
Author(s):  
Rainer Dick
Keyword(s):  
Dark Matter ◽  
Decay Width ◽  
Cross Sections ◽  
Mass Formula ◽  
Higgs Mass ◽  
Resonance Region ◽  
Mass Range ◽  
Unitarity Limit ◽  
Higgs Decay ◽  
Higgs Portal

We review predictions and constraints for nuclear recoil signals from Higgs portal dark matter under the assumption of standard thermal creation from freeze-out. Thermally created scalar and vector Higgs portal dark matter masses are constrained to be in the resonance region near half the Higgs mass, [Formula: see text], or above several TeV. The resonance region for these models will be tested by XENONnT and LZ. The full mass range up to the unitarity limit can be tested by DarkSide-20k and DARWIN. Fermionic Higgs portal dark matter with a pure CP odd coupling is constrained by the Higgs decay width, but has strongly suppressed recoil cross sections which cannot be tested with upcoming experiments. Fermionic Higgs portal dark matter with a combination of CP even and odd Higgs couplings can be constrained by the direct search experiments.

scholarly journals The LHC upper bounds for pp → diboson, tt̄ cross-section on fermionic dark matter

2017 ◽  
Vol 32 (22) ◽  
pp. 1750131
Author(s):  
Karim Ghorbani ◽  
Parsa Hossein Ghorbani
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Cross Sections ◽  
Direct Detection ◽  
Upper Bounds ◽  
Higgs Decay ◽  
Upper Limit ◽  
Relic Density ◽  
The Future ◽  
Effective Operators

The ATLAS report in August 2016 provided an upper limit for the pp[Formula: see text][Formula: see text][Formula: see text]diboson and [Formula: see text] cross-sections. We consider a pseudoscalar-mediated fermionic dark matter together with gluon and photon effective operators interacting with the pseudoscalar. Choosing the resonance mass being [Formula: see text], 750 GeV and 2 TeV, beside the relic density and the invisible Higgs decay constraints we constrain more the space of parameters with the diboson and [Formula: see text] cross-section upper bounds. We finally provide some benchmarks consistent with all the constraints. Having exploited a pseudoscalar mediator, the DM-nucleon cross-section is velocity suppressed so that the model evades easily the bounds put by the future direct detection experiments such as XENON1T.

scholarly journals 2HDM singlet portal to dark matter

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
M. E. Cabrera ◽  
J. A. Casas ◽  
A. Delgado ◽  
S. Robles
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Parameter Space ◽  
Direct Detection ◽  
Single Parameter ◽  
Relic Density ◽  
Relic Abundance ◽  
Higgs Portal ◽  
The Universe

Abstract Higgs portal models are the most minimal way to explain the relic abundance of the Universe. They add just a singlet that only couples to the Higgs through a single parameter that controls both the dark matter relic abundance and the direct detection cross-section. Unfortunately this scenario, either with scalar or fermionic dark matter, is almost ruled out by the latter. In this paper we analyze the Higgs-portal idea with fermionic dark matter in the context of a 2HDM. By disentangling the couplings responsible for the correct relic density from those that control the direct detection cross section we are able to open the parameter space and find wide regions consistent with both the observed relic density and all the current bounds.

scholarly journals LHC and Tevatron bounds on the dark matter direct detection cross-section for vector mediators

2012 ◽  
Vol 2012 (7) ◽  
Author(s):  
Mads T. Frandsen ◽  
Felix Kahlhoefer ◽  
Anthony Preston ◽  
Subir Sarkar ◽  
Kai Schmidt-Hoberg
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Direct Detection

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 Direct detection of Higgs–portal dark matter at the LHC

2013 ◽  
Vol 73 (6) ◽  
Author(s):  
Abdelhak Djouadi ◽  
Adam Falkowski ◽  
Yann Mambrini ◽  
Jérémie Quevillon
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Higgs Portal

scholarly journals Dark matter, fine-tuning and (g-2)_{\mu} in the pMSSM

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Melissa van Beekveld ◽  
Wim Beenakker ◽  
Marrit Schutten ◽  
Jeremy De Wit
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Cross Section ◽  
Direct Detection ◽  
Fine Tuning ◽  
Dark Matter Relic Density ◽  
Depth Analysis ◽  
Relic Density ◽  
The Right ◽  
First Time

In this paper we perform for the first time an in-depth analysis of the spectra in the phenomenological supersymmetric Standard Model that simultaneously offer an explanation for the (g-2)_{\mu}(g−2)μ discrepancy \Delta a_{\mu}Δaμ, result in the right dark-matter relic density \Omega_{DM} h^2ΩDMh2 and are minimally fine-tuned. The resulting spectra may be obtained from [1]. To discuss the experimental exclusion potential for our models, we analyse the resulting LHC phenomenology as well as the sensitivity of dark-matter direct detection experiments to these spectra. We find that the latter type of experiments with sensitivity to the spin-dependent dark-matter–nucleon scattering cross section \sigma_{SD,p}σSD,p will probe all of our found solutions.

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