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

2022 ◽  
Vol 105 (1) ◽  
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 in minimal dimensional transmutation with multicritical-point principle

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Yuta Hamada ◽  
Hikaru Kawai ◽  
Kin-ya Oda ◽  
Kei Yagyu
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Scale Invariance ◽  
Direct Detection ◽  
Planck Scale ◽  
Higgs Field ◽  
Scalar Fields ◽  
Tree Level ◽  
Multicritical Point ◽  
Dimensional Transmutation

Abstract We investigate a model with two real scalar fields that minimally generates exponentially different scales in an analog of the Coleman-Weinberg mechanism. The classical scale invariance — the absence of dimensionful parameters in the tree-level action, required in such a scale generation — can naturally be understood as a special case of the multicritical-point principle. This two-scalar model can couple to the Standard Model Higgs field to realize a maximum multicriticality (with all the dimensionful parameters being tuned to critical values) for field values around the electroweak scale, providing a generalization of the classical scale invariance to a wider class of criticality. As a bonus, one of the two scalars can be identified as Higgs-portal dark matter. We find that this model can be consistent with the constraints from dark matter relic abundance, its direct detection experiments, and the latest LHC data, while keeping the perturbativity up to the reduced Planck scale. We then present successful benchmark points satisfying all these constraints: the mass of dark matter is a few TeV, and its scattering cross section with nuclei is of the order of 10−9 pb, reachable in near future experiments. The mass of extra Higgs boson H is smaller than or of the order of 100 GeV, and the cross section of e+e− → ZH can be of fb level for collision energy 250 GeV, targetted at future lepton colliders.

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