Light and heavy dark matter particles

By C. Bœhm, P. Fayet, J. Silk. 2003

166 citations recorded by the source corpus.

It has recently been pointed out that the 511 keV emission line detected by integral/SPI from the bulge of our galaxy could be explained by annihilations of light dark matter particles into ${e}^{+}{e}^{\ensuremath{-}}.$ If such a signature is confirmed, then one might expect a conflict with the interpretation of very high energy gamma rays if they also turn out to be due to dark matter annihilations. Here, we propose a way to accommodate the existence of both signals being produced by dark matter annihilations through the existence of two stable (neutral) dark matter particles, as is possible in theories inspired from $N=2$ supersymmetry.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4c04a051de015be59f2d39f3abf020d320d72069

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In Nuclear and High Energy Physics

Citations in the corpus

Constraining light dark matter with diffuse X-ray and gamma-ray observations (2013, unknown): “, [1–9].”
Constraining light dark matter with low-energy e+e− colliders (2013, unknown): “[38–55] and references therein.”
Modulation Effects in Dark Matter-Electron Scattering Experiments (2015, methodology): “Such light DM is motivated by several classes of models, including asymmetric [5–7], WIMPless [8] and other scenarios [9–14].”
Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider (2019, background): “Scenarios with LLPs coupled to new gauge bosons are well motivated by theories of DM, particularly models with significant self-interactions [116–118] and/or sub-weak mass scales [17, 18, 20, 119, 120].”