scholarly journals What do Galactic electrons and positrons tell us about dark matter?

2017 ◽  
Author(s):  
Mathieu Boudaud ◽  
Sami Caroff ◽  
Antje Putze ◽  
Yoann Genolini ◽  
Julien LAVALLE ◽  
...  
Keyword(s):  
Dark Matter ◽  
Electrons And Positrons ◽  
Galactic Electrons

scholarly journals Galactic electrons and positrons at the Earth: new estimate of the primary and secondary fluxes

2010 ◽  
Vol 524 ◽  
pp. A51 ◽  
Author(s):  
T. Delahaye ◽  
J. Lavalle ◽  
R. Lineros ◽  
F. Donato ◽  
N. Fornengo
Keyword(s):  
The Earth ◽  
Electrons And Positrons ◽  
Galactic Electrons

scholarly journals Perspectives for indirect dark matter search with AMS-2 using cosmic-ray electrons and positrons

2009 ◽  
Vol 11 (10) ◽  
pp. 105021 ◽  
Author(s):  
B Beischer ◽  
P von Doetinchem ◽  
H Gast ◽  
T Kirn ◽  
S Schael
Keyword(s):  
Dark Matter ◽  
Cosmic Ray ◽  
Dark Matter Search ◽  
Electrons And Positrons

scholarly journals Search for dark matter cosmic-ray electrons and positrons from the Sun with the Fermi Large Area Telescope

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
A. Cuoco ◽  
P. De La Torre Luque ◽  
F. Gargano ◽  
M. Gustafsson ◽  
F. Loparco ◽  
...  
Keyword(s):  
Dark Matter ◽  
Cosmic Ray ◽  
The Sun ◽  
Large Area ◽  
Electrons And Positrons

scholarly journals The electron plus positron spectrum from annihilation of Kaluza–Klein dark matter in the Galaxy

2017 ◽  
Vol 26 (09) ◽  
pp. 1750095 ◽  
Author(s):  
Satoshi Tsuchida ◽  
Masaki Mori
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Galactic Halo ◽  
Mass Range ◽  
Decay Modes ◽  
Positron Fraction ◽  
Electrons And Positrons ◽  
The Galaxy ◽  
Positron Spectrum ◽  
Kaluza Klein

The lightest Kaluza–Klein particle (LKP), which appears in the theory of universal extra dimensions (UED), is one of the good candidates for cold dark matter (CDM). When LKP pairs annihilate around the center of the Galaxy where CDM is concentrated, there are some modes which produce electrons and positrons as final products, and we categorize them into two components. One of them is the “line” component, which directly annihilates into electron–positron pair. Another one is the “continuum” component, which consists of secondarily produced electrons and positrons via some decay modes. Before reaching Earth, directions of electrons and positrons are randomized by the Galactic magnetic field, and their energies are reduced by energy loss mechanisms. We assume the LKP is in the mass range from 300[Formula: see text]GeV to 1500[Formula: see text]GeV. We calculate the electron plus positron spectrum after propagation in the Galactic halo to Earth, and we analyze the resulting spectrum and positron fraction. We also point out that the energy dependence of observed positron fraction is well reproduced by the mixture of “line” and “continuum” components. We can fit the electron plus positron spectrum and the positron fraction by assuming appropriate boost factors describing dark matter concentration in the Galactic halo. However, it is difficult to explain both the electron plus positron spectrum and the positron fraction by a single boost factor if we take account of observational data obtained by AMS-02 only.

scholarly journals Observations of Forbush Decreases of Cosmic-Ray Electrons and Positrons with the Dark Matter Particle Explorer

2021 ◽  
Vol 920 (2) ◽  
pp. L43
Author(s):  
Francesca Alemanno ◽  
Qi An ◽  
Philipp Azzarello ◽  
Felicia Carla Tiziana Barbato ◽  
Paolo Bernardini ◽  
...  
Keyword(s):  
Dark Matter ◽  
Dark Matter Particle ◽  
Cosmic Ray ◽  
Forbush Decreases ◽  
Electrons And Positrons
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