scholarly journals Dark matter in minimal universal extra dimensions with a stable vacuum and the “right” Higgs boson

2014 ◽  
Vol 89 (5) ◽  
Author(s):  
Jonathan M. Cornell ◽  
Stefano Profumo ◽  
William Shepherd
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Extra Dimensions ◽  
The Right

scholarly journals Dynamical torsion as the microscopic origin of the neutrino seesaw

2014 ◽  
Vol 29 (21) ◽  
pp. 1450111 ◽  
Author(s):  
M. A. Zubkov
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Quantum Gravity ◽  
Coupling Constants ◽  
Light Neutrino ◽  
Neutrino Masses ◽  
Minimal Coupling ◽  
The Right ◽  
Invisible Decay ◽  
Microscopic Origin

It is assumed, that there are two scales in quantum gravity. Metric fluctuates at the scales of the order of the Planck mass. The second scale MT is related to the fluctuations of torsion. We suppose, that it may be as low as MT~1 TeV . Due to the non-minimal coupling to torsion, the attractive interaction between the fermions appear. The non-minimal coupling admits the appearance of different coupling constants for different fermions. This opens the possibility that the interaction with torsion gives the Majorana masses for the right-handed neutrinos (that are assumed to be of the order of MT). We suppose, that the Dirac masses for the neutrino are all close to the mass of electron. This gives the light neutrino masses ≤0.25 eV. In addition, the model predicts the appearance of Majorons that may contribute to the dark matter as well as to the invisible decay of the 125 GeV Higgs boson.

scholarly journals Kinetic mixing, dark photons and extra dimensions. Part III. Brane localized dark matter

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Thomas G. Rizzo ◽  
George N. Wojcik
Keyword(s):  
Dark Matter ◽  
Extra Dimensions ◽  
Model Building ◽  
New Physics ◽  
Model Complexity ◽  
Complex Scalar ◽  
Dark Photon ◽  
Complex Models ◽  
The Cost ◽  
D Model

Abstract Extra dimensions have proven to be a very useful tool in constructing new physics models. In earlier work, we began investigating toy models for the 5-D analog of the kinetic mixing/vector portal scenario where the interactions of dark matter, taken to be, e.g., a complex scalar, with the brane-localized fields of the Standard Model (SM) are mediated by a massive U(1)D dark photon living in the bulk. These models were shown to have many novel features differentiating them from their 4-D analogs and which, in several cases, avoided some well-known 4-D model building constraints. However, these gains were obtained at the cost of the introduction of a fair amount of model complexity, e.g., dark matter Kaluza-Klein excitations. In the present paper, we consider an alternative setup wherein the dark matter and the dark Higgs, responsible for U(1)D breaking, are both localized to the ‘dark’ brane at the opposite end of the 5-D interval from where the SM fields are located with only the dark photon now being a 5-D field. The phenomenology of such a setup is explored for both flat and warped extra dimensions and compared to the previous more complex models.

scholarly journals Testing minimal universal extra dimensions using Higgs boson searches at the LHC

2013 ◽  
Vol 87 (1) ◽  
Author(s):  
Geneviève Bélanger ◽  
Alexander Belyaev ◽  
Matthew Brown ◽  
Mitsuru Kakizaki ◽  
Alexander Pukhov
Keyword(s):  
Higgs Boson ◽  
Extra Dimensions

DARK GEOMETRY

2004 ◽  
Vol 13 (10) ◽  
pp. 2275-2279 ◽  
Author(s):  
J. A. R. CEMBRANOS ◽  
A. DOBADO ◽  
A. L. MAROTO
Keyword(s):  
Dark Matter ◽  
Extra Dimensions ◽  
Degrees Of Freedom ◽  
Planck Scale ◽  
Point Of View ◽  
Missing Mass ◽  
Brane Worlds ◽  
Mass Problem ◽  
Extra Space ◽  
The Universe

Extra-dimensional theories contain additional degrees of freedom related to the geometry of the extra space which can be interpreted as new particles. Such theories allow to reformulate most of the fundamental problems of physics from a completely different point of view. In this essay, we concentrate on the brane fluctuations which are present in brane-worlds, and how such oscillations of the own space–time geometry along curved extra dimensions can help to resolve the Universe missing mass problem. The energy scales involved in these models are low compared to the Planck scale, and this means that some of the brane fluctuations distinctive signals could be detected in future colliders and in direct or indirect dark matter searches.

scholarly journals Connection of gamma rays, dark matter, and Higgs boson searches at the LHC

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
J. D. Ruiz-Alvarez ◽  
C. A. de S. Pires ◽  
Farinaldo S. Queiroz ◽  
D. Restrepo ◽  
P. S. Rodrigues da Silva
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Gamma Rays

scholarly journals Gravitino dark matter with constraints from Higgs boson mass and sneutrino decays

2013 ◽  
Vol 2013 (3) ◽  
Author(s):  
Leszek Roszkowski ◽  
Sebastian Trojanowski ◽  
Krzysztof Turzyński ◽  
Karsten Jedamzik
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

scholarly journals Constraining extended scalar sectors at the LHC and beyond

2018 ◽  
Vol 33 (10n11) ◽  
pp. 1830007 ◽  
Author(s):  
Agnieszka Ilnicka ◽  
Tania Robens ◽  
Tim Stefaniak
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Standard Model ◽  
Parameter Space ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Doublet Model ◽  
Inert Doublet Model ◽  
Scalar Sector ◽  
Scalar Singlet

We give a brief overview of beyond the Standard Model (BSM) theories with an extended scalar sector and their phenomenological status in the light of recent experimental results. We discuss the relevant theoretical and experimental constraints, and show their impact on the allowed parameter space of two specific models: the real scalar singlet extension of the Standard Model (SM) and the Inert Doublet Model. We emphasize the importance of the LHC measurements, both the direct searches for additional scalar bosons, as well as the precise measurements of properties of the Higgs boson of mass 125 GeV. We show the complementarity of these measurements to electroweak and dark matter observables.

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