scholarly journals MeV dark matter: model independent bounds

2017 ◽  
Vol 2017 (9) ◽  
Author(s):  
Enrico Bertuzzo ◽  
Cristian J. Caniu Barros ◽  
Giovanni Grilli di Cortona
Keyword(s):  
Dark Matter ◽  
Matter Model ◽  
Model Independent ◽  
Dark Matter Model

scholarly journals Search for $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ charged dark matter with neutrino telescope

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Kento Asai ◽  
Shohei Okawa ◽  
Koji Tsumura
Keyword(s):  
Dark Matter ◽  
Resonance Effect ◽  
Neutrino Telescope ◽  
Dirac Fermion ◽  
Dark Matter Relic Density ◽  
Relic Density ◽  
Matter Model ◽  
Model Independent ◽  
Model Characteristic ◽  
Dark Matter Model

Abstract We study a simple Dirac fermion dark matter model in $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ U 1 L μ − L τ theory. The new light gauge boson X plays important roles in both dark matter physics and the explanation for the muon g− 2 anomaly. The observed dark matter relic density is realized by a large $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ U 1 L μ − L τ charge without introducing a resonance effect of the X boson. As a by-product of the model, characteristic neutrino signatures from sub-GeV dark matter ψ are predicted depending on the mass spectrum. We formulate the analysis of $$ \psi \overline{\psi}\to \nu \overline{\nu} $$ ψ ψ ¯ → ν ν ¯ , and of $$ \psi \overline{\psi}\to XX $$ ψ ψ ¯ → XX followed by $$ X\to \nu \overline{\nu} $$ X → ν ν ¯ in a model independent way. The energy spectrum of neutrinos in the former process is monochromatic while in the latter process is bowl-shape. We also evaluate sensitivity at Super-Kamiokande and future Hyper-Kamiokande detectors. The analysis is finally applied to the $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ U 1 L μ − L τ dark matter model.

scholarly journals Graviton Spectrum in Simplified Dark Matter Models with Graviton Mediators in the de Sitter Space

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 39
Author(s):  
Ion Vancea
Keyword(s):  
Dark Matter ◽  
De Sitter Space ◽  
Coupling Constant ◽  
De Sitter ◽  
Point Function ◽  
Matter Model ◽  
Model Independent ◽  
First Order Correction ◽  
Dark Matter Model ◽  
Matter Fields

This is the second in a series of papers investigating the formulation of the simplified Dark Matter models with graviton mediators in cosmological backgrounds. We address here the crucial problem of the fundamental observable of interest, namely the graviton spectrum in an Friedmann–Lemaître–Robertson–Walker (FLRW) cosmological background with an arbitrary Dark Matter background component. We calculate the correction to the free graviton two-point function up to the second order in the coupling constant between the Dark Matter and the graviton in the simplified Dark Matter model with graviton mediators approach in the de Sitter space. Our result is model independent in the sense that it does not depend on the particular form of the Dark Matter fields. In addition, due to the universality of the interaction between the Dark Matter and the graviton, the result obtained here applies to the interaction between the baryonic matter and the gravitons. As an application, we discuss in detail the massive scalar Dark Matter model and calculate the first order correction to the two-point function due to two Dark Matter modes in the adiabatic regime.

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 An interpretation of a simple portal dark matter model on Fermi-LAT gamma-ray excess

2021 ◽  
Vol 1719 (1) ◽  
pp. 012041
Author(s):  
Tanech Klangburam ◽  
Chakrit Pongkitivanichkul
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Matter Model ◽  
Dark Matter Model

scholarly journals The evolution of Lyman-break galaxies in the cold dark matter model

2011 ◽  
Vol 412 (3) ◽  
pp. 1828-1852 ◽  
Author(s):  
C. G. Lacey ◽  
C. M. Baugh ◽  
C. S. Frenk ◽  
A. J. Benson
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Lyman Break Galaxies ◽  
Cold Dark Matter Model ◽  
Matter Model ◽  
Dark Matter Model
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