scholarly journals Indirect detection of dark matter using MeV-range gamma-ray telescopes

2015 ◽  
Vol 92 (2) ◽  
Author(s):  
Kimberly K. Boddy ◽  
Jason Kumar
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Indirect Detection ◽  
Gamma Ray Telescopes

scholarly journals Effective field theory analysis of dark matter-standard model interactions with spin one mediators

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Fabiola Fortuna ◽  
Pablo Roig ◽  
José Wudka
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Standard Model ◽  
Effective Field Theory ◽  
Gamma Ray ◽  
Direct Detection ◽  
Effective Field ◽  
Indirect Detection ◽  
Theory Analysis ◽  
Invisible Decay

Abstract We analyze interactions between dark matter and standard model particles with spin one mediators in an effective field theory framework. In this paper, we are considering dark particles masses in the range from a few MeV to the mass of the Z boson. We use bounds from different experiments: Z invisible decay width, relic density, direct detection experiments, and indirect detection limits from the search of gamma-ray emissions and positron fluxes. We obtain solutions corresponding to operators with antisymmetric tensor mediators that fulfill all those requirements within our approach.

scholarly journals Resolving dark matter subhalos with future sub-GeV gamma-ray telescopes

2018 ◽  
Vol 21 ◽  
pp. 1-7 ◽  
Author(s):  
Ti-Lin Chou ◽  
Dimitrios Tanoglidis ◽  
Dan Hooper
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Gamma Ray Telescopes

scholarly journals Decaying dark matter in dwarf spheroidal galaxies: Prospects for x-ray and gamma-ray telescopes

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Shin’ichiro Ando ◽  
Suvendu K. Barik ◽  
Zhuoran Feng ◽  
Marco Finetti ◽  
Andreas Guerra Chaves ◽  
...  
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
X Ray ◽  
Dwarf Spheroidal Galaxies ◽  
Decaying Dark Matter ◽  
Gamma Ray Telescopes ◽  
Spheroidal Galaxies

scholarly journals A decaying neutralino as dark matter and its gamma ray spectrum

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
Amin Aboubrahim ◽  
Tarek Ibrahim ◽  
Michael Klasen ◽  
Pran Nath
Keyword(s):  
Dark Matter ◽  
Radiative Decay ◽  
Gamma Ray ◽  
Indirect Detection ◽  
Supersymmetric Particle ◽  
Unified Framework ◽  
Dark Matter Annihilation ◽  
Hidden Sector ◽  
Visible Sector ◽  
The Universe

AbstractIt is shown that a decaying neutralino in a supergravity unified framework is a viable candidate for dark matter. Such a situation arises in the presence of a hidden sector with ultraweak couplings to the visible sector where the neutralino can decay into the hidden sector’s lightest supersymmetric particle (LSP) with a lifetime larger than the lifetime of the universe. We present a concrete model where the MSSM/SUGRA is extended to include a hidden sector comprised of $$U(1)_{X_1} \times U(1)_{X_2}$$ U ( 1 ) X 1 × U ( 1 ) X 2 gauge sector and the LSP of the hidden sector is a neutralino which is lighter than the LSP neutralino of the visible sector. We compute the loop suppressed radiative decay of the visible sector neutralino into the neutralino of the hidden sector and show that the decay can occur with a lifetime larger than the age of the universe. The decaying neutralino can be probed by indirect detection experiments, specifically by its signature decay into the hidden sector neutralino and an energetic gamma ray photon. Such a gamma ray can be searched for with improved sensitivity at Fermi-LAT and by future experiments such as the Square Kilometer Array (SKA) and the Cherenkov Telescope Array (CTA). We present several benchmarks which have a natural suppression of the hadronic channels from dark matter annihilation and decays and consistent with measurements of the antiproton background.

scholarly journals Detection of branon dark matter with gamma ray telescopes

2012 ◽  
Vol 85 (4) ◽  
Author(s):  
J. A. R. Cembranos ◽  
A. de la Cruz-Dombriz ◽  
V. Gammaldi ◽  
A. L. Maroto
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Gamma Ray Telescopes

scholarly journals Gamma-Ray Dark Matter Searches in Milky Way Satellites—A Comparative Review of Data Analysis Methods and Current Results

Galaxies ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 25 ◽  
Author(s):  
Javier Rico
Keyword(s):  
Dark Matter ◽  
Milky Way ◽  
Gamma Ray ◽  
Matter Content ◽  
Dark Matter Search ◽  
Comparative Review ◽  
The Status ◽  
General Statistical ◽  
Weakly Interacting Particles ◽  
Gamma Ray Telescopes

If dark matter is composed of weakly interacting particles with mass in the GeV-TeV range, their annihilation or decay may produce gamma rays that could be detected by gamma-ray telescopes. Observations of dwarf spheroidal satellite galaxies of the Milky Way (dSphs) benefit from the relatively accurate predictions of dSph dark matter content to produce robust constraints to the dark matter properties. The sensitivity of these observations for the search for dark matter signals can be optimized thanks to the use of advanced statistical techniques able to exploit the spectral and morphological peculiarities of the expected signal. In this paper, I review the status of the dark matter searches from observations of dSphs with the current generation of gamma-ray telescopes: Fermi-LAT, H.E.S.S, MAGIC, VERITAS and HAWC. I will describe in detail the general statistical analysis framework used by these instruments, putting in context the most recent experimental results and pointing out the most relevant differences among the different particular implementations. This will facilitate the comparison of the current and future results, as well as their eventual integration in a multi-instrument and multi-target dark matter search.

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