scholarly journals Measurement of high energy dark matter from the Sun at IceCube

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Ye Xu
Keyword(s):  
Dark Matter ◽  
Energy Range ◽  
High Energy ◽  
The Sun ◽  
Neutrino Telescopes ◽  
Model Based ◽  
Upper Limits ◽  
Matter Model ◽  
Icecube Detector ◽  
Dark Matter Model

Abstract It is assumed that heavy dark matter particles (HDMs) with a mass of O(TeV) are captured by the Sun. HDMs can decay to relativistic light dark matter particles (LDMs), which could be measured by km3 neutrino telescopes (like the IceCube detector). The numbers and fluxes of expected LDMs and neutrinos were evaluated at IceCube with the Z′ portal dark matter model. Based on the assumption that no events are observed at IceCube in 6 years, the corresponding upper limits on LDM fluxes were calculated at 90% C. L.. These results indicated that LDMs could be directly detected in the O(1TeV)-O(10TeV) energy range at IceCube with 100 GeV ≲ mZ′ ≲ 350 GeV and τϕ ≲ 5 × 1022ṡ.

scholarly journals Light mass window of lepton portal dark matter

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Shohei Okawa ◽  
Yuji Omura
Keyword(s):  
Dark Matter ◽  
Scalar Potential ◽  
Neutrino Flux ◽  
Mass Region ◽  
Neutrino Telescopes ◽  
Yukawa Couplings ◽  
Left Handed ◽  
Matter Model ◽  
Relic Abundance ◽  
Dark Matter Model

Abstract We explore a novel possibility that dark matter has a light mass below 1 GeV in a lepton portal dark matter model. There are Yukawa couplings involving dark matter, left-handed leptons and an extra scalar doublet in the model. In the light mass region, dark matter is thermally produced via its annihilation into neutrinos. In order to obtain the correct relic abundance and avoid collider bounds, a neutral scalar is required to be light while charged scalars need to be heavier than the electroweak scale. Such a mass spectrum is realized by adjusting quartic couplings in the scalar potential or introducing an extra singlet scalar. It turns out that the mass region of 10 MeV–10 GeV is almost free from experimental and observational constraints. We also point out that searches for extra neutrino flux from galactic dark matter annihilations with neutrino telescopes are the best way to test our model.

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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